DeletingPredicate returns a predicate that returns true if the object is being deleted.

NodeKernelReconcilePredicate will queue the request in the following cases: CREATE: always, as we need to make sure we add a new entry to 'kernelToOS' mapping UPDATE: only if the kernel version or the os image version changed DELETE: never.

PodReadinessChangedPredicate returns a predicate for Update events that only returns true if the Ready condition changed.