Automatic merge from submit-queue
Avoid unnecessary status update when there is no corresponding mirror pod
Fixes https://github.com/kubernetes/kubernetes/issues/32191.
This PR changes status manager to skip update when there is no mirror pod for a static pod.
We need this because:
1) When static pod terminates and mirror pod is deleted, this will avoid extra `syncPod`.
2) During mirror pod creation and recreation, this will avoid unnecessary `syncPod`.
Mark P1 to match the original issue.
@wojtek-t @yujuhong
/cc @kubernetes/sig-node
36bc5b11c3