kubectl drain: Generic "declare a controller" message

[wking]

When it initially landed in c6e9ad0 (#16698), the drain logic looked in a created-by annotation for recognized kinds, so listing the set of recognized kinds was a clear approach.

Sometime later, the source moved into ownerReferences, but the hard-coded set of recognized controller kinds remained.

When 2f11084 (#56864) removed the hard-coded set of recognized controller kinds, it should have also updated these messages to remove stale references to the previous hard-coded values. This commit catches the message strings up with that commit.

/kind cleanup

NONE

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[ravisantoshgudimetla]

Thanks for the clean up. I think we already have log the pods which doesn't have ownerRefs. So we should be good.

/lgtm

[soltysh]

/lgtm
/approve
/ok-to-test
/triage accepted
/priority backlog

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This pull-request has been approved by: ravisantoshgudimetla, soltysh, wking

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