Automatic merge from submit-queue. 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>.
Remove the local manifest list after push
**What this PR does / why we need it**:
Manifests seem sticky in docker, so let's try to purge so if
we have re-push a fresh set of containers (with same version number as
before) during testing, the manifests are created fresh.
Change-Id: I41c010c08bd50b68ff6973a4ae1e004824fab178
**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 #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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