Automatic merge from submit-queue (batch tested with PRs 55545, 55548, 55815, 56136, 56185). 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 storageclass unit tests

Before this change, a unit test fails:
```
make test WHAT=k8s.io/kubernetes/pkg/registry/storage/storageclass/storage
```

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

/assign @saad-ali 
/assign @thockin