Automatic merge from submit-queue (batch tested with PRs 63011, 68089, 67944, 68132). 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.
Start deprecating all generators in run except for run-pod/v1
**What this PR does / why we need it**:
This was discussed during SIG-CLI meetings over several past months. The direction is that we want to move away from `kubectl run` because it's over bloated and complicated for both users and developers. We want to mimic `docker run` with `kubectl run` so that it *only* creates a pod, and if you're interested in other resources `kubectl create` is the intended replacement.
This PR starts with deprecating all of the generator except for the pod one.
/assign @juanvallejo
/sig cli
/milestone v1.12
**Release note**:
```release-note
Deprecate kubectl run generators, except for run-pod/v1
```
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