* Use `not-ready` to replace `notReady` in node condition taint keys. ([#51266](https://github.com/kubernetes/kubernetes/pull/51266), [@resouer](https://github.com/resouer))
* Support completion for --clusterrole of kubectl create clusterrolebinding ([#48267](https://github.com/kubernetes/kubernetes/pull/48267), [@superbrothers](https://github.com/superbrothers))

    * or grant self-deletion permission explicitly:
        * `kubectl create clusterrole self-deleting-nodes --verb=delete --resource=nodes`
        * `kubectl create clusterrolebinding self-deleting-nodes --clusterrole=self-deleting-nodes --group=system:nodes`