Merge pull request #55119 from pires/fix_e2e_scheduling_predicates_hostname

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>.

Fix scheduler predicates test that may violate DNS label rules

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

This commit fixes an issue where in clusters which have FQDN as the node names,
one of the scheduling predicates tests will fail because it will try and run a
pod with a name that violates DNS-1123 rules. As an example, one such pod name
could look like "filler-pod-kube-node-0.kubelet.mesos".

**Which issue(s) this PR fixes**:
Fixes #55117

**Special notes for your reviewer**:

As soon as this is approved, I will create the cherry-pick PRs for 1.7.x. It doesn't apply on 1.8.x.

cc @aveshagarwal @kubernetes/sig-scheduling-pr-reviews 

**Release note**:
```
NONE
```

test/e2e/scheduling/predicates.go

@@ -291,7 +291,7 @@ var _ = SIGDescribe("SchedulerPredicates [Serial]", func() {
 		for nodeName, cpu := range nodeToAllocatableMap {
 			requestedCPU := cpu * 7 / 10
 			fillerPods = append(fillerPods, createPausePod(f, pausePodConfig{
-				Name: "filler-pod-" + nodeName,
+				Name: "filler-pod-" + string(uuid.NewUUID()),
 				Resources: &v1.ResourceRequirements{
 					Limits: v1.ResourceList{
 						v1.ResourceCPU: *resource.NewMilliQuantity(requestedCPU, "DecimalSI"),