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>.
Moves the DevicePlugin e2e_node test back to Serial
I forgot the fact that the DevicePlugin test itself restarts Kubelet
for testing purpose. Move that test back to Serial but constructs
a smaller test without kubelet restart that we may run during presubmit.
**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 https://github.com/kubernetes/kubernetes/issues/60604
**Special notes for your reviewer**:
**Release note**:
```release-note
```
71c89b4562