Automatic merge from submit-queue

PetSet replica count status test

**What this PR does / why we need it**: It adds a test for PetSet status replica count. It should fail now, but will pass when https://github.com/kubernetes/kubernetes/pull/32117 is merged.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #31965

**Special notes for your reviewer**: It will need to be rebased after #32117 is merged in, don't need detailed review before that.

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

Added fakeKubeClient and other fake types needed to test what is sent to
API when replica count is updated. These fakes can be extended for
other tests.