Automatic merge from submit-queue (batch tested with PRs 50378, 51463, 50006, 51962, 51673). 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>..
provider_test.go: use existing method instead of own copy of it
**What this PR does / why we need it**:
This PR removes duplicated definition of the `defaultPod()` function and also updates a comment.
**Release note**:
```release-note
NONE
```
1b7cd72261