Automatic merge from submit-queue (batch tested with PRs 49444, 47864, 48584, 49395, 49118)
Do not spin forever if kubectl drain races with other removal
In https://github.com/kubernetes/kubernetes/pull/47450 we stopped
returning an error if a pod disappeared before we could remove it.
Instead we just continue to spin forever. Return "success" if a pod
disappeared before we actually removed it.
https://bugzilla.redhat.com/1473777
bug 1473777
```release-note
`kubectl drain` no longer spins trying to delete pods that do not exist
```
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