Merge pull request kubernetes#68074 from mkimuram/issue/68073

Automatic merge from submit-queue (batch tested with PRs 67368, 59930, 68074). If you want to cherry-pick this change to another branch, please follow the instructions here: https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md.

Fix subpath tests not to fail in namespace deletion

**What this PR does / why we need it**:
This PR fixes below subpath test not to fail in namespace deletion

 - subPath should support restarting containers using directory as subpath
 - subPath should support restarting containers using file as subpath

**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: kubernetes#68073

**Special notes for your reviewer**:
/sig storage
/sig testing

**Release note**:
```release-note
NONE
```

Author: Kubernetes Submit Queue

test/e2e/storage/testsuites/subpath.go

@@ -589,7 +589,9 @@ func testPodContainerRestart(f *framework.Framework, pod *v1.Pod) {
 	By(fmt.Sprintf("Creating pod %s", pod.Name))
 	pod, err := f.ClientSet.CoreV1().Pods(f.Namespace.Name).Create(pod)
 	Expect(err).ToNot(HaveOccurred(), "while creating pod")
-
+	defer func() {
+		framework.DeletePodWithWait(f, f.ClientSet, pod)
+	}()
 	err = framework.WaitForPodRunningInNamespace(f.ClientSet, pod)
 	Expect(err).ToNot(HaveOccurred(), "while waiting for pod to be running")