release-20.2:Backport!3845

Merged Andrey Vertiprahov requested to merge cherry-pick-9892b55c into release-20.2

Cleanup cm.ObjecFact on managedobject on_delete_check.

See merge request !3845 (merged)

(cherry picked from commit 9892b55c)

7d45a824 Cleanup cm.ObjecFact on managedobject on_delete_check.

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