Automatic merge from submit-queue (batch tested with PRs 45684, 45266, 45669, 44787, 44984)

[Federation] Unify the delivery methods in the ReplicaSet controller.

Unifies the federated and non-federated object delivery methods. The reconcile method that's called already checks for existence, and no other controller has a similar paradigm, so it seems reasonable to simplify it here.

cc @marun

**Release note**:
```release-note
NONE
```