Automatic merge from submit-queue (batch tested with PRs 54042, 54185, 54880). 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>.
Inventory of kubectl dependency on main repository
**What this PR does / why we need it**:
Add an import-boss file to inventory what kubectl depends on, so
we can prune this list over time and eventually get kubectl out
of the main k/k repository.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Related to https://github.com/kubernetes/kubectl/issues/114
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```