Automatic merge from submit-queue (batch tested with PRs 57532, 57392). 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>.

Gke spec tweaks

**What this PR does / why we need it**:
This PR removes two unnecessary requirements for the GKE node image validation spec:

- The "vim" package doesn't need to be installed, as a vim environment is already available and the full "vim" pacakge installation takes some precious disk space.
- The linux headers are not needed for the kubernetes node and cluster tests to succeed, and again, take unnecessary disk space.

**Special notes for your reviewer**:
None.

**Release note**:

```release-note
NONE
```