Automatic merge from submit-queue (batch tested with PRs 58517, 57642). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

 make kube-apiserver admission flag disable other plugins 98eb5922

The old kube-apiserver flag for enabling admission plugins implicitly disabled ones that were unmentioned.  This restores that behavior.

followup to https://github.com/kubernetes/kubernetes/pull/58123

@hzxuzhonghu You're pretty deep into this now.  ptal

/assign hzxuzhonghu
/assign sttts