When we observe valid coordinates for a previously virtual node,
if there are dependents that do not agree with those coordinates,
add them to the attemptToDelete queue.
This queue will check the dependent's ownerReferences using the coordinates specified by the dependent.
If all of the owners can be verified absent, the dependent will be deleted.
If some are still present, or if there are errors looking them up, the dependent will not be deleted.
If the verified owner is namespaced, and the dependent is not in the same namespace,
an event will be recorded for user visibility, since cross-namespace ownerReferences are not supported.
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