Automatic merge from submit-queue (batch tested with PRs 53747, 54528, 55279, 55251, 55311). 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>.
Stop running unit tests outside of Bazel.
We tried this a while ago, but had to revert because Bazel did not have
race detection. Now it does.
Previous issue: #40602 and #52443
Relevant parties: @ixdy @mikedanese @smarterclayton @deads2k @liggitt
/sig testing
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 53747, 54528, 55279, 55251, 55311). 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>.
a typo in dockershim.cm.containerManager.doWork
Signed-off-by: yanxuean <yan.xuean@zte.com.cn>
**What this PR does / why we need it**:
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
/sig node
Automatic merge from submit-queue (batch tested with PRs 53747, 54528, 55279, 55251, 55311). 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 e2e test to verify volume attach status after master kubelet restart
**What this PR does / why we need it**:
This PR adds test to verify volume remains attached after the kubelet is restarted on master node.
**Which issue this PR fixes** :
fixes vmware#274
**Special notes for your reviewer**:
This test does not run as part of existing sig-storage test grid. It has been tested internally at VMware.
Test logs
```
root@k8s-dev-vm-01:~/shahzeb/k8s/kubernetes# go run hack/e2e.go --check-version-skew=false -v -test --test_args='--ginkgo.focus=Volume\sAttach\sVerify'
flag provided but not defined: -check-version-skew
Usage of /tmp/go-build395888807/command-line-arguments/_obj/exe/e2e:
-get
go get -u kubetest if old or not installed (default true)
-old duration
Consider kubetest old if it exceeds this (default 24h0m0s)
2017/10/11 12:14:05 e2e.go:55: NOTICE: go run hack/e2e.go is now a shim for test-infra/kubetest
2017/10/11 12:14:05 e2e.go:56: Usage: go run hack/e2e.go [--get=true] [--old=24h0m0s] -- [KUBETEST_ARGS]
2017/10/11 12:14:05 e2e.go:57: The separator is required to use --get or --old flags
2017/10/11 12:14:05 e2e.go:58: The -- flag separator also suppresses this message
2017/10/11 12:14:05 e2e.go:151: The kubetest binary is older than 24h0m0s.
2017/10/11 12:14:05 e2e.go:156: Updating kubetest binary...
2017/10/11 12:14:13 e2e.go:77: Calling kubetest --check-version-skew=false -v -test --test_args=--ginkgo.focus=Volume\sAttach\sVerify...
2017/10/11 12:14:13 util.go:154: Running: ./cluster/kubectl.sh --match-server-version=false version
2017/10/11 12:14:13 util.go:156: Step './cluster/kubectl.sh --match-server-version=false version' finished in 493.364761ms
2017/10/11 12:14:13 util.go:154: Running: ./hack/e2e-internal/e2e-status.sh
Skeleton Provider: prepare-e2e not implemented
Client Version: version.Info{Major:"1", Minor:"6+", GitVersion:"v1.6.0-alpha.0.17307+d274c30f81d1c2", GitCommit:"d274c30f81d1c2d966dc950014ac90f8fad140f7", GitTreeState:"clean", BuildDate:"2017-10-11T18:57:31Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"6", GitVersion:"v1.6.5", GitCommit:"490c6f13df1cb6612e0993c4c14f2ff90f8cdbf3", GitTreeState:"clean", BuildDate:"2017-06-14T20:03:38Z", GoVersion:"go1.7.6", Compiler:"gc", Platform:"linux/amd64"}
2017/10/11 12:14:14 util.go:156: Step './hack/e2e-internal/e2e-status.sh' finished in 352.041653ms
2017/10/11 12:14:14 util.go:154: Running: ./hack/ginkgo-e2e.sh --ginkgo.focus=Volume\sAttach\sVerify
Conformance test: not doing test setup.
Oct 11 12:14:15.478: INFO: Overriding default scale value of zero to 1
Oct 11 12:14:15.478: INFO: Overriding default milliseconds value of zero to 5000
I1011 12:14:15.692022 29999 e2e.go:383] Starting e2e run "5f33ad5b-aeb8-11e7-9f17-0050569c27f6" on Ginkgo node 1
Running Suite: Kubernetes e2e suite
===================================
Random Seed: 1507749254 - Will randomize all specs
Will run 1 of 709 specs
Oct 11 12:14:15.744: INFO: >>> kubeConfig: /tmp/kube204.json
Oct 11 12:14:15.751: INFO: Waiting up to 4h0m0s for all (but 0) nodes to be schedulable
Oct 11 12:14:15.861: INFO: Waiting up to 10m0s for all pods (need at least 0) in namespace 'kube-system' to be running and ready
Oct 11 12:14:16.067: INFO: 4 / 4 pods in namespace 'kube-system' are running and ready (0 seconds elapsed)
Oct 11 12:14:16.067: INFO: expected 0 pod replicas in namespace 'kube-system', 0 are Running and Ready.
Oct 11 12:14:16.077: INFO: Waiting for pods to enter Success, but no pods in "kube-system" match label map[name:e2e-image-puller]
Oct 11 12:14:16.077: INFO: Dumping network health container logs from all nodes...
Oct 11 12:14:16.083: INFO: Client version: v1.6.0-alpha.0.17307+d274c30f81d1c2
Oct 11 12:14:16.086: INFO: Server version: v1.6.5
SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
------------------------------
[sig-storage] Volume Attach Verify [Feature:vsphere]
verify volume remains attached after master kubelet restart
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/storage/vsphere_volume_master_restart.go:144
[BeforeEach] [sig-storage] Volume Attach Verify [Feature:vsphere]
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/framework/framework.go:133
STEP: Creating a kubernetes client
Oct 11 12:14:16.087: INFO: >>> kubeConfig: /tmp/kube204.json
STEP: Building a namespace api object
STEP: Waiting for a default service account to be provisioned in namespace
[BeforeEach] [sig-storage] Volume Attach Verify [Feature:vsphere]
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/storage/vsphere_volume_master_restart.go:81
Oct 11 12:14:16.265: INFO: Waiting up to 4h0m0s for all (but 0) nodes to be schedulable
[It] verify volume remains attached after master kubelet restart
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/storage/vsphere_volume_master_restart.go:144
STEP: Creating a test vsphere volume 0
STEP: Creating pod 0 on node kubernetes-node1
STEP: Waiting for pod to be ready
STEP: Verify volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749256431387056.vmdk is attached to the pod kubernetes-node1
STEP: Creating a test vsphere volume 1
STEP: Creating pod 1 on node kubernetes-node2
STEP: Waiting for pod to be ready
STEP: Verify volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749281940603428.vmdk is attached to the pod kubernetes-node2
STEP: Creating a test vsphere volume 2
STEP: Creating pod 2 on node kubernetes-node3
STEP: Waiting for pod to be ready
STEP: Verify volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749305162880964.vmdk is attached to the pod kubernetes-node3
STEP: Creating a test vsphere volume 3
STEP: Creating pod 3 on node kubernetes-node4
STEP: Waiting for pod to be ready
STEP: Verify volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749330788801099.vmdk is attached to the pod kubernetes-node4
STEP: Restarting kubelet on master node
Oct 11 12:16:12.239: INFO: Restarting kubelet via ssh on host 10.192.113.70:22 with command systemctl restart kubelet
STEP: Verifying the kubelet on master node is up
Oct 11 12:16:13.318: INFO: ssh root@10.192.113.70:22: command: curl http://localhost:10255/healthz
Oct 11 12:16:13.318: INFO: ssh root@10.192.113.70:22: stdout: ""
Oct 11 12:16:13.318: INFO: ssh root@10.192.113.70:22: stderr: " % Total % Received % Xferd Average Speed Time Time Time Current\n Dload Upload Total Spent Left Speed\n\r 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0curl: (7) Failed to connect to localhost port 10255: Connection refused\n"
Oct 11 12:16:13.318: INFO: ssh root@10.192.113.70:22: exit code: 7
STEP: After master restart, verify volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749256431387056.vmdk is attached to the pod kubernetes-node1
STEP: Deleting pod on node kubernetes-node1
Oct 11 12:16:18.538: INFO: Deleting pod "vsphere-e2e-pwjr1" in namespace "e2e-tests-restart-master-j9x0f"
Oct 11 12:16:18.559: INFO: Wait up to 5m0s for pod "vsphere-e2e-pwjr1" to be fully deleted
STEP: Waiting for volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749256431387056.vmdk to be detached from the node kubernetes-node1
Oct 11 12:17:10.686: INFO: Volume "[vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749256431387056.vmdk" appears to have successfully detached from "kubernetes-node1".
STEP: Deleting volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749256431387056.vmdk
STEP: After master restart, verify volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749281940603428.vmdk is attached to the pod kubernetes-node2
STEP: Deleting pod on node kubernetes-node2
Oct 11 12:17:11.614: INFO: Deleting pod "vsphere-e2e-vqkbp" in namespace "e2e-tests-restart-master-j9x0f"
Oct 11 12:17:11.624: INFO: Wait up to 5m0s for pod "vsphere-e2e-vqkbp" to be fully deleted
STEP: Waiting for volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749281940603428.vmdk to be detached from the node kubernetes-node2
Oct 11 12:17:55.748: INFO: Volume "[vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749281940603428.vmdk" appears to have successfully detached from "kubernetes-node2".
STEP: Deleting volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749281940603428.vmdk
STEP: After master restart, verify volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749305162880964.vmdk is attached to the pod kubernetes-node3
STEP: Deleting pod on node kubernetes-node3
Oct 11 12:17:56.051: INFO: Deleting pod "vsphere-e2e-fkrzb" in namespace "e2e-tests-restart-master-j9x0f"
Oct 11 12:17:56.069: INFO: Wait up to 5m0s for pod "vsphere-e2e-fkrzb" to be fully deleted
STEP: Waiting for volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749305162880964.vmdk to be detached from the node kubernetes-node3
Oct 11 12:18:38.199: INFO: Volume "[vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749305162880964.vmdk" appears to have successfully detached from "kubernetes-node3".
STEP: Deleting volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749305162880964.vmdk
STEP: After master restart, verify volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749330788801099.vmdk is attached to the pod kubernetes-node4
STEP: Deleting pod on node kubernetes-node4
Oct 11 12:18:38.541: INFO: Deleting pod "vsphere-e2e-4cb0d" in namespace "e2e-tests-restart-master-j9x0f"
Oct 11 12:18:38.556: INFO: Wait up to 5m0s for pod "vsphere-e2e-4cb0d" to be fully deleted
STEP: Waiting for volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749330788801099.vmdk to be detached from the node kubernetes-node4
Oct 11 12:19:22.672: INFO: Volume "[vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749330788801099.vmdk" appears to have successfully detached from "kubernetes-node4".
STEP: Deleting volume [vsanDatastore] 8c95d659-46fa-b9a6-5e19-02002f28e688/e2e-vmdk-1507749330788801099.vmdk
[AfterEach] [sig-storage] Volume Attach Verify [Feature:vsphere]
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/framework/framework.go:134
Oct 11 12:19:23.460: INFO: Waiting up to 3m0s for all (but 0) nodes to be ready
STEP: Destroying namespace "e2e-tests-restart-master-j9x0f" for this suite.
Oct 11 12:19:29.544: INFO: namespace: e2e-tests-restart-master-j9x0f, resource: bindings, ignored listing per whitelist
Oct 11 12:19:29.622: INFO: namespace e2e-tests-restart-master-j9x0f deletion completed in 6.156220683s
• [SLOW TEST:313.535 seconds]
[sig-storage] Volume Attach Verify [Feature:vsphere]
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/storage/framework.go:22
verify volume remains attached after master kubelet restart
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/storage/vsphere_volume_master_restart.go:144
------------------------------
SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSOct 11 12:19:29.666: INFO: Running AfterSuite actions on all node
Oct 11 12:19:29.666: INFO: Running AfterSuite actions on node 1
Ran 1 of 709 Specs in 313.923 seconds
SUCCESS! -- 1 Passed | 0 Failed | 0 Pending | 708 Skipped PASS
```
Internally reviewed by VMware reviewers @divyenpatel @BaluDontu @tusharnt
**Release note**:
```
None
```
Automatic merge from submit-queue (batch tested with PRs 54177, 55203, 55120, 55275, 55260). 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>.
GCE: provide an option to disable docker's live-restore
**What this PR does / why we need it**:
Provide an option to disable docker's live-restore for COS/ubuntu images on GCE. Some newer COS images have live-restore enabled by default. This allows users to override the option if needed.
**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 #
**Special notes for your reviewer**:
**Release note**:
```release-note
GCE: provide an option to disable docker's live-restore on COS/ubuntu
```
Automatic merge from submit-queue (batch tested with PRs 54177, 55203, 55120, 55275, 55260). 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>.
Make ReconcileOptions reusable
This change makes ReconcileOptions fully reusable by:
1. Replacing ResourceBuilder with a Visitor that can be generically plugged in. This decouples the use of file input from the options.
2. Replacing core client with namespace client since that smaller interface is what is needed by RunReconcile.
3. All fields are now checked by Validate as a way to document that they should be set before calling RunReconcile.
Signed-off-by: Monis Khan <mkhan@redhat.com>
```release-note
NONE
```
/assign @deads2k @fabianofranz @juanvallejo
Automatic merge from submit-queue (batch tested with PRs 54177, 55203, 55120, 55275, 55260). 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>.
[bug fix]invalid memory address or nil pointer dereference when mounting azure disk
**What this PR does / why we need it**:
**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#55199
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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>.
Restrict Azure NSG rules to allow external access only to load balancer IP
**What this PR does / why we need it**: On Azure, we create NSG (Network Security Group) rules on the vnet to allow external clients to access services exposed as type LoadBalancer. At the moment, these rules have a destination of `Any`, which means that they will permit requests on the opened port to any IP within the vnet. This PR restricts the security rules so that they admit external access only to the load balancer IP.
**Which issue this PR fixes**: None in upstream - reported as https://github.com/Azure/acs-engine/issues/1619
**Special notes for your reviewer**: None
**Release note**:
```release-note
Azure NSG rules for services exposed via external load balancer
now limit the destination IP address to the relevant front end load
balancer IP.
```
Automatic merge from submit-queue (batch tested with PRs 55331, 55272, 55228, 49763, 55242). 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>.
client-go/tools/cache: fix possible deadlock when stopping a reflector
While getting Connection-Refused error, a reflector was retrying without stopping when the stopCh is closed.
The flaking TestCRD #54095 sometimes shows a deadlock in reflectors that should be shutdown, called from the storage cacher. So possibly this is related.
Automatic merge from submit-queue (batch tested with PRs 55331, 55272, 55228, 49763, 55242). 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 versiond group clients from client-go
**What this PR does / why we need it**:
Some **Deprecated** group clients are still used, replace them with versioned group clients.
**Which issue this PR fixes**: fixes#49760
**Special notes for your reviewer**:
/assign @caesarxuchao
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 55331, 55272, 55228, 49763, 55242). 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 DaemonSet conditions
**What this PR does / why we need it**:
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
xref https://github.com/kubernetes/features/issues/353, #7856
**Special notes for your reviewer**:
A `conditions` field is added to DaemonSetStatus for consistency. No valid DaemonSet condition type is supported yet.
@kubernetes/sig-apps-api-reviews
**Release note**:
```release-note
DaemonSet status now has a new field named "conditions", making it consistent with other workloads controllers.
```
Automatic merge from submit-queue (batch tested with PRs 55331, 55272, 55228, 49763, 55242). 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 GKE failure, set default in configure.sh.
Fixes#55189.
Signed-off-by: Lantao Liu <lantaol@google.com>
**Release note**:
```release-note
none
```
Automatic merge from submit-queue (batch tested with PRs 54493, 52501, 55172, 54780, 54819). 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 integration test for deployment rolling update, rollback, rollover
**What this PR does / why we need it**:
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: ref #52113
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 54493, 52501, 55172, 54780, 54819). 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 divide by zero issue in calculating spread priority for zones
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 54493, 52501, 55172, 54780, 54819). 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 CoreDNS as feature in kubeadm
**What this PR does / why we need it**:
This PR adds CoreDNS as a DNS plugin via the feature-gate option in Kubeadm init.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*:
Fixeskubernetes/features#427
**Special notes for your reviewer**:
**Release note**:
```release-note
kubeadm: Add an experimental mode to deploy CoreDNS instead of KubeDNS
```
/cc @johnbelamaric
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Replace some occurances of kubernetes internal api types in kubectl
**What this PR does / why we need it**:
Removes dependency on k8s.io/kubernetes/pkg/apis/extensions from kubectl
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
part of https://github.com/kubernetes/kubectl/issues/83
fixes: https://github.com/kubernetes/kubectl/issues/92
**Special notes for your reviewer**:
**Release note**:
```NONE
```
KubeletVersionCheck now able to detect if kubelet version
is higher than control plane. As this might lead to malfunctional
cluster setups, kubeadm will give warning.
Fixes: kubernetes/kubeadm#496
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Allow HPA to get custom metrics
**What this PR does / why we need it**:
This PR allows HPA to read custom metrics.
**Release note**:
```release-note
Allow HPA to read custom metrics.
```
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Node which is not present not need update NodeAddress
**What this PR does / why we need it**:
when the node is not exist according to cloud provider. there is no need to update node address better.
finally the node will be delete in https://github.com/kubernetes/kubernetes/blob/master/pkg/controller/cloud/node_controller.go#L240
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
**Special notes for your reviewer**:
**Release note**:
```
NONE
```
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Fix 'Schedulercache is corrupted' error
Fixes#50916
If an Assume()ed pod is Add()ed with a different nodeName, the podStates view of the pod is not corrected to reflect the actual nodeName. On the next Update(), the scheduler observes the mismatch and process exits.
```release-note
Fixed 'Schedulercache is corrupted' error in kube-scheduler
```
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When cert dir is relative, cert rotation builds incorrect symlinks
Symlinks relative to a working directory were being constructed to the
wrong location, leading to failure to refresh client certs.
@liggitt
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Improve cronjob concurrency policy doc
**What this PR does / why we need it**:
The CronJob API documentation (https://kubernetes.io/docs/api-reference/v1.8/#cronjobspec-v1beta1-batch) did not clearly state what can be used as `concurrencyPolicy`. Instead, it only says that the default value is "Raw".
**Which issue(s) this PR fixes**:
**Special notes for your reviewer**:
This patch is not changing any code logic but it involves generated "code".
**Release note**:
```release-note
NONE
```
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Tolerate partial discovery in garbage collector
Allow the garbage collector to tolerate partial discovery failures. On a
partial failure, use whatever was discovered, log the failures, and
allow the resync logic to try again later.
Fixes#55022.
```release-note
API discovery failures no longer crash the kube controller manager via the garbage collector.
```
/cc @caesarxuchao
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