Automatic merge from submit-queue (batch tested with PRs 65251, 67255, 67224, 67297, 68105). 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.

Cleanup PodSecurityPolicy AllowPrivEsc tests

**What this PR does / why we need it**:

Old tests were confusing and missing a lot of combinations. The new test is a simple table-driven test with all valid combinations.

**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 ##67387

**Special notes for your reviewer**:
Alternative to https://github.com/kubernetes/kubernetes/pull/67388

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