Commit Graph

104 Commits (d6918bbbc0402fc81a53479f4b61b836d7c33a29)

Author SHA1 Message Date
Zihong Zheng 34f8e4e97b Add GCE ingress test case for modified health check 2018-01-31 17:46:14 -08:00
Kubernetes Submit Queue b260494621
Merge pull request #58643 from MrHohn/e2e-ingress-sync-failure
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Add gce-ingress e2e test for sync failure case

**What this PR does / why we need it**:
Add a test that verifies sync failures on some inrgesses would not stop gce ingress controller from syncing others.

Basically:
- Create two ingresses each has something wrong (TLS missing, backend missing etc.).
- Create a normal ingress and test it works.
- Update this ingress and test it takes effect.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #NONE

**Special notes for your reviewer**:
Ref https://docs.google.com/document/d/1E2ufxZGujFCYKYOsvBjb4VMNjBy8CM-MMycoT_UVwIs/edit#heading=h.wxzdzliw64t8.
/assign @rramkumar1 @nicksardo 

**Release note**:

```release-note
NONE
```
2018-01-31 16:05:45 -08:00
Kubernetes Submit Queue d560f55370
Merge pull request #58623 from MrHohn/use-gce-library-e2e
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

[e2e util] Remove static IP functions based on gcloud

**What this PR does / why we need it**:
Use GCE library for static IP instead of calling gcloud in e2e test.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #NONE

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
2018-01-31 14:48:35 -08:00
Minhan Xia b114763dc2 fix neg e2e test 2018-01-24 14:12:28 -08:00
Zihong Zheng 59b27a4d2b Add gce-ingress e2e test for sync failure case 2018-01-22 16:25:17 -08:00
Kubernetes Submit Queue 05529df248
Merge pull request #57896 from chrisglass/conntrack_test_fix
Automatic merge from submit-queue (batch tested with PRs 57896, 58070). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Use /proc/net/nf_conntrack.

/proc/net/ip_conntrack was finally removed from linux 4.9 onwards,
instead we should use /proc/net/nf_conntrack (see commit message at
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=adf0516845bcd0e626323c858ece28ee58c74455)

Signed-off-by: Chris Glass <chris.glass@canonical.com>



**What this PR does / why we need it**:

This PR fixes a test failure from linux kernels 4.9 onwards. The alternative interface used in this PR has been available for 10 years, so it is unlikely not to be available.

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
2018-01-21 20:25:29 -08:00
Chris Glass a2a0b9cd0f Use /proc/net/nf_conntrack.
/proc/net/ip_conntrack was finally removed from linux 4.9 onwards,
instead we should use /proc/net/nf_conntrack (see commit message at
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=adf0516845bcd0e626323c858ece28ee58c74455)

Signed-off-by: Chris Glass <chris.glass@canonical.com>
2018-01-21 20:34:39 +01:00
Zihong Zheng 8387ff428f [e2e util] Remove static IP functions based on gcloud 2018-01-19 18:42:32 -08:00
Bowei Du 81725cab34 Update Forwarding rules to use generated code 2018-01-18 17:34:15 -08:00
p0lyn0mial dd9de90b0a the changes introduced in this commit plumbs in the generic scaler into kubectl.
note that we don't change the behaviour of kubectl.
For example it won't scale new resources. That's the end goal.
The first step is to retrofit existing code to use the generic scaler.
2018-01-12 09:21:18 +01:00
liz b814c5677f
Collect all the assorted image URLs from e2e tests in one place
utils/image/manifest has an additional `arch` parameter, which determines
whether an image ends in `-$ARCH` (like `-amd64`).

All locations that previously had gcr.io urls referenced in costants or inline
have been updated to refere test/utils/image.
2017-12-19 12:16:07 -05:00
Tim Hockin eba5b6092a Use k8s.gcr.io vanity domain for container images 2017-12-18 09:18:34 -08:00
Kubernetes Submit Queue ca620d3520
Merge pull request #56724 from nicksardo/gce-e2e-ilb-endpoint2
Automatic merge from submit-queue (batch tested with PRs 56250, 56809, 56812, 56792, 56724). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Hit ILB endpoint in e2e test

**What this PR does / why we need it**:
During the ILB e2e networking test, a pod is created and curls the ILB's IP address, validating that the load balancer correctly routes traffic to the K8s service.  Test will also hit the external LB endpoint after switching from ILB->ELB, validating no GCE conversion issues going from ILB to ELB.

This does not validate that the load balancer is accessible externally to the cluster (but on the same network). 

**Release note**:
```release-note
NONE
```
2017-12-16 07:46:48 -08:00
Kubernetes Submit Queue 876259435a
Merge pull request #55991 from supereagle/core-client-with-version
Automatic merge from submit-queue (batch tested with PRs 54604, 55781, 55806, 55935, 55991). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Use core client with explicit version

**What this PR does / why we need it**:
Core client without explicit version has been deprecated, change them to the one with explicit version.

**Which issue(s) this PR fixes**:
Fixes partially #55993

**Special notes for your reviewer**:
/cc @kubernetes/sig-api-machinery-pr-reviews
/cc @caesarxuchao @k82cn @sttts @kevin-wangzefeng 

**Release note**:
```release-note
NONE
```
2017-12-13 22:26:01 -08:00
Nick Sardo f922935f2f Hit ILB endpoint in ILB e2e test 2017-12-04 15:57:02 -08:00
Kubernetes Submit Queue f9f8dc30c5
Merge pull request #52748 from leblancd/v6_e2e_host_port
Automatic merge from submit-queue (batch tested with PRs 52748, 56623). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Add brackets around IPv6 addrs in e2e test IP:port endpoints

There are several locations in the e2e tests where endpoints of the
form IPv6:port use IPv6 addresses directly, without surrounding brackets.
Brackets are required around IPv6 addresses in this case, in order to
distinguish the colons in the IPv6 address from the colon immediately
preceding the port.

Also, wherever the curl command might be used with an IPv6 address
surrounded in brackets, the "-g" argument is added to the curl
command line arguments so that the brackets can be interpreted
correctly.

fixes #52746



**What this PR does / why we need it**:
This PR adds brackets around IPv6 addresses when they appear as part of an IPv6-addr:port endpoint
in the e2e tests. This is needed because any connections that attempt to use IPv6-addr:port
endpoint without brackets surrounding the IPv6-addr will fail.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #52746

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
2017-12-04 14:22:10 -08:00
supereagle 032416c75d use core client with explicit version
fix more usage of deprecated core client
2017-11-25 08:14:10 +08:00
Zihong Zheng 11d283ebf4 Don't call BeforeEach() again in ingress suite 2017-11-20 20:01:22 -08:00
Kubernetes Submit Queue dcdb423ef4
Merge pull request #55186 from bcreane/named-port-egress
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

NetworkPolicy e2e: named port egress test

**What this PR does / why we need it**:
Add an e2e NetworkPolicy test that ensures that an egress rule that specifies a named port properly applies to egress traffic.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #52040

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
2017-11-19 19:57:17 -08:00
Shyam Jeedigunta d08a14819c Add special tag for disabling ESIPP and HPA-related tests on large clusters 2017-11-15 14:35:44 +01:00
Dane LeBlanc 2827b7ffb7 Add brackets around IPv6 addrs in e2e test IP:port endpoints
There are several locations in the e2e tests where endpoints of the
form IP:port use IPv6 addresses directly, without surrounding brackets.
Brackets are required around IPv6 addresses in this case, in order to
distinguish the colons in the IPv6 address from the colon immediately
preceding the port.

Also, wherever the curl command might be used with an IPv6 address
surrounded in brackets, the "-g" argument is added to the curl
command line arguments so that the brackets can be interpreted
correctly.

fixes #52746
2017-11-14 10:55:09 -05:00
Kubernetes Submit Queue 6e2e5bac40
Merge pull request #54946 from bradtopol/adddnscrdcmprobeconform
Automatic merge from submit-queue (batch tested with PRs 54826, 53576, 55591, 54946, 54825). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Add dns, configmap, and custom resource definition conformance

annotations.

Signed-off-by: Brad Topol <btopol@us.ibm.com>
Add dns, configmap, and custom resource definition related conformance annotations

/sig testing
/area conformance
@sig-testing-pr-reviews

This PR adds pod related conformance annotations to the e2e test suite.

The PR fixes a portion of #53822. It focuses on adding conformance annotations as defined by the Kubernetes Conformance Workgroup for a subset of the dns, configmap, and custom resource definition based e2e conformance tests.
Special notes for your reviewer:

Please see https://docs.google.com/spreadsheets/d/1WWSOqFaG35VmmPOYbwetapj1VPOVMqjZfR9ih5To5gk/edit#gid=62929400
for the list of SIG Arch approved test names and descriptions that I am using.




**Release note**:

```release-note NONE

```
2017-11-13 14:47:05 -08:00
Kubernetes Submit Queue 91615e4fd9
Merge pull request #49258 from xiangpengzhao/fix-dup-port-panic
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Check dup NodePort with protocols when update services

**What this PR does / why we need it**:
As the title says.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #48579 fixes: #54898 fixes: #55327

**Special notes for your reviewer**:
/assign @freehan 
/cc @cblecker 

**Release note**:

```release-note
NONE
```
2017-11-12 22:53:38 -08:00
Kubernetes Submit Queue 1d5dff0e05
Merge pull request #55426 from shyamjvs/disable-service-e2e-for-large-cluster
Automatic merge from submit-queue (batch tested with PRs 46581, 55426, 54849). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Disable service e2e test related to LB for huge clusters

Based on https://github.com/kubernetes/kubernetes/issues/52495#issuecomment-343263564

/cc @MrHohn
2017-11-10 03:30:18 -08:00
Kubernetes Submit Queue c7644dd104
Merge pull request #46581 from m1093782566/fix-net-perf
Automatic merge from submit-queue (batch tested with PRs 46581, 55426, 54849). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

fix newline in raw string in e2e net perf case

**Which issue this PR fixes** 

fixes #46083
2017-11-10 03:30:15 -08:00
Shyam Jeedigunta 913721ebee Disable service e2e on type and port change for huge clusters 2017-11-09 20:42:13 +01:00
Dr. Stefan Schimanski bec617f3cc Update generated files 2017-11-09 12:14:08 +01:00
Dr. Stefan Schimanski 012b085ac8 pkg/apis/core: mechanical import fixes in dependencies 2017-11-09 12:14:08 +01:00
Shyam Jeedigunta 9356c78709 Skip ESIPP [Slow] suite of networking tests for huge clusters 2017-11-07 23:23:08 +01:00
Kubernetes Submit Queue dd00bc65f9
Merge pull request #55122 from MrHohn/fix-session-affinity-e2e
Automatic merge from submit-queue (batch tested with PRs 55114, 52976, 54871, 55122, 55140). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Don't share nodePort service in session affinity tests

**What this PR does / why we need it**:
From https://github.com/kubernetes/kubernetes/issues/54524, https://github.com/kubernetes/kubernetes/issues/54571.

Spent sometime to dig into it today, found this test is flaky mostly because it sends out service requests before kube-proxy reacts on the service session affinity update, hence multiple endpoints are responding instead of one. It is more flaky in alpha CIs probably due to different test sequences.

This PR creates a separate service with `sessionAffinity=ClientIP` so there wouldn't be a race between test begins and kube-proxy reacts. On the other hand, it also seems inappropriate to tweak the`config.NodePortService`, which is shared by other networking tests.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes # (will mark them fixed later).

**Special notes for your reviewer**:
/assign @m1093782566 @bowei 
cc @spiffxp

**Release note**:

```release-note
NONE

```
2017-11-06 23:19:21 -08:00
Kubernetes Submit Queue 743d11fbd5
Merge pull request #55047 from nikhiljindal/ingressTest
Automatic merge from submit-queue (batch tested with PRs 55093, 54966, 55047, 54971, 54786). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Adding an e2e test for gce multi cluster ingress

Basic test that verifies that multi cluster ingress gets the instance groups annotation.

Ref https://github.com/kubernetes/ingress-gce/issues/71

cc @csbell @G-Harmon @nicksardo @bowei 

```release-note
NONE```
2017-11-06 20:38:56 -08:00
Brendan Creane 1e7f01e9a2 Add named port egress test 2017-11-06 14:34:01 -08:00
nikhiljindal 2e1d61a0d5 Adding an e2e test for gce multi cluster ingress 2017-11-06 13:48:35 -08:00
MrHohn e07a9c4ce6 Don't share nodePort service in session affinity tests 2017-11-05 22:42:33 -08:00
xiangpengzhao 32675e6f62 Remove check for SubResourcePodProxyVersion and SubResourceServiceAndNodeProxyVersion 2017-11-03 23:11:09 +08:00
xiangpengzhao 0c7ef059db Add e2e test for checking dup NodePort with protocols 2017-11-02 11:26:52 +08:00
Brad Topol 948648ac7a Add dns, configmap, and custom resource definition conformance
annotations.

Signed-off-by: Brad Topol <btopol@us.ibm.com>
2017-11-01 08:58:56 -07:00
Kubernetes Submit Queue d118e44320
Merge pull request #54686 from m1093782566/gce-alpha-fail
Automatic merge from submit-queue (batch tested with PRs 54572, 54686). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix service session affinity e2e failure cases

**What this PR does / why we need it**:

Fix service session affinity e2e failure cases - debuging...

**Which issue this PR fixes**:

xref #54571 #54524

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

/sig network
2017-10-30 21:45:17 -07:00
m1093782566 5210793802 debug e2e fail cases 2017-10-31 10:10:20 +08:00
Matt Liggett a5967cbaf1 Add framework.ConformanceIt as the new way to declare conformance tests.
Also rewrite all existing conformance tests to use this.
2017-10-27 15:29:59 -07:00
Kevin 4c8539cece use core client with explicit version globally 2017-10-27 15:48:32 +08:00
Kubernetes Submit Queue 4aee608048 Merge pull request #54338 from bradtopol/addsecretlatencyconform
Automatic merge from submit-queue (batch tested with PRs 54112, 54150, 53816, 54321, 54338). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Add service latency and secret related conformance annotations

Signed-off-by: Brad Topol <btopol@us.ibm.com>

/sig testing
/area conformance
@sig-testing-pr-reviews

This PR adds service latency and secret related conformance annotations to the e2e test suite.

The PR fixes a portion of #53822. It focuses on adding conformance annotations as defined by the Kubernetes Conformance Workgroup for a subset of the pod based e2e conformance tests.
Special notes for your reviewer:

Please see https://docs.google.com/spreadsheets/d/1WWSOqFaG35VmmPOYbwetapj1VPOVMqjZfR9ih5To5gk/edit#gid=62929400
for the list of SIG Arch approved test names and descriptions that I am using.

**Release note**:

```release-note NONE
```
2017-10-26 17:07:36 -07:00
Kubernetes Submit Queue 706d7b9056 Merge pull request #54321 from bradtopol/addexpansionserviceconform
Automatic merge from submit-queue (batch tested with PRs 54112, 54150, 53816, 54321, 54338). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Add conformance annotations for expansion and service tests

Signed-off-by: Brad Topol <btopol@us.ibm.com>

/sig testing
/area conformance
@sig-testing-pr-reviews

This PR adds expansion and service test conformance annotations to the e2e test suite.

The PR fixes a portion of #53822. It focuses on adding conformance annotations as defined by the Kubernetes Conformance Workgroup for a subset of the pod based e2e conformance tests.
Special notes for your reviewer:
Please see https://docs.google.com/spreadsheets/d/1WWSOqFaG35VmmPOYbwetapj1VPOVMqjZfR9ih5To5gk/edit#gid=62929400
for the list of SIG Arch approved test names and descriptions that I am using.



```release-note NONE
```
2017-10-26 17:07:32 -07:00
Kubernetes Submit Queue 7914aed80a Merge pull request #54431 from bradtopol/addpredicateproxyconform
Automatic merge from submit-queue (batch tested with PRs 54455, 54431). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Add conformance annotations for proxy and scheduler predicate tests

Signed-off-by: Brad Topol <btopol@us.ibm.com>

/sig testing
/area conformance
@sig-testing-pr-reviews

This PR adds proxy and scheduler predicate related conformance annotations to the e2e test suite.

The PR fixes a portion of #53822. It focuses on adding conformance annotations as defined by the Kubernetes Conformance Workgroup for a subset of the pod based e2e conformance tests.
Special notes for your reviewer:
Please see https://docs.google.com/spreadsheets/d/1WWSOqFaG35VmmPOYbwetapj1VPOVMqjZfR9ih5To5gk/edit#gid=62929400
for the list of SIG Arch approved test names and descriptions that I am using.



**Release note**:

```release-note NONE
```
2017-10-26 15:10:41 -07:00
Kubernetes Submit Queue b8d0f4f2d2 Merge pull request #54455 from guangxuli/fix-network-e2e-test
Automatic merge from submit-queue (batch tested with PRs 54455, 54431). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Migrate cluster dns test to sig network

**What this PR does / why we need it**:

Just migrate dns relevant e2e test files to sig network. 

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

Ref Umbrella issue #49161

**Special notes for your reviewer**:

**Release note**:
```release-note
none
```
2017-10-26 15:10:37 -07:00
Kubernetes Submit Queue 90a6a4f1f8 Merge pull request #53569 from leblancd/v6_e2e_ext_ip
Automatic merge from submit-queue (batch tested with PRs 53000, 52870, 53569). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fallback to internal addrs in e2e tests when no external addrs available

This change modifies the way that config.NodeIP is selected at the
start of e2e Networking tests such that if no external addresses are
available from the cloud provider (e.g. either no cloud provider being
used [baremetal or VMs], or the provider doesn't have external IPs
configured), then one of the internal addresses is used.

Without this change, the e2e service-related Networking tests will always
panic when config.ExternalAddrs[0] is accessed and the slice is empty.

This change eliminates the panic, and in some setups, the fallback choice
of using an internal address will provide the necessary connectivity
for the e2e Networking tests to access each node.

fixes #53568



**What this PR does / why we need it**:
This change modifies the way that config.NodeIP is selected at the
start of e2e Networking tests such that if no external addresses are
available from the cloud provider (e.g. either no cloud provider being
used [baremetal or VMs], or the provider doesn't have external IPs
configured), then one of the internal addresses is used.

Without this change, the e2e service-related Networking tests will always
panic when no cloud provider is being used, or the cloud provider does
not have external addresses configured.

This change eliminates the panic, and in some setups, the fallback choice
of using an internal address will provide the necessary connectivity
for the e2e Networking tests to access each node.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #53568

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
2017-10-26 14:18:29 -07:00
Gavin 4ab97a7cb8 migrate cluster dns test to sig network 2017-10-26 16:00:33 +08:00
Kubernetes Submit Queue 152e23caee Merge pull request #53760 from m1093782566/session-ci
Automatic merge from submit-queue (batch tested with PRs 53760, 48996, 51267, 54414). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix CI error for service session affinity

**What this PR does / why we need it**:

Fix CI error for service session affinity -- debug

**Which issue this PR fixes**: 

fixes #53741

**Special notes for your reviewer**:

I remove the [slow] tag so that these test cases can be run in PR request. We may need to add back the [slow] tag when this PR is ready to get in.

**Release note**:

```release-note
NONE
```
2017-10-25 17:37:00 -07:00
m1093782566 7ffd5b293c fix newline in raw string in e2e net perf case 2017-10-25 13:26:43 +08:00
Kubernetes Submit Queue 8d3a19229f Merge pull request #54111 from freehan/neg-test
Automatic merge from submit-queue (batch tested with PRs 54107, 54184, 54377, 54094, 54111). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

add e2e tests for NEG

This PR includes tests:
- ingress conformance test
- scaling up and down backends
- switching backend between IG and NEG
- rolling update backend should not cause service disruption

```release-note
NONE
```
2017-10-24 15:59:17 -07:00