* 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))

[@caesarxuchao](https://github.com/caesarxuchao))

* Using kubectl gcp auth plugin with a Google Service Account to authenticate to a cluster now additionally requests a token with the  "userinfo.email" scope. This way, users can write ClusterRoleBindings/RoleBindings with the email address of the service account directly. (This is a breaking change if the numeric uniqueIDs of the Google service accounts were being used in RBAC role bindings. The behavior can be overridden by explicitly specifying...