* Fixes issue where if the audit log is enabled and anonymous authentication is disabled, then an unauthenticated user request will cause a panic and crash the `kube-apiserver`. ([#38717](https://github.com/kubernetes/kubernetes/pull/38717), [@deads2k](https://github.com/deads2k))

## Known Issues for v1.5.1

- Restored the `--verify-only` function in code generation wrappers.
   ([#123261](https://github.com/kubernetes/kubernetes/pull/123261), [@skitt](https://github.com/skitt))
- Reverted the `EventedPLEG` feature (beta, but disabled by default) back to alpha due to a known issue.
   ([#122697](https://github.com/kubernetes/kubernetes/pull/122697), [@pacoxu](https://github.com/pacoxu))
- Used `errors.Is()` to handle errors returned by `LookPath()`.

* Update GlusterFS provisioning readme with endpoint/service details ([#31854](https://github.com/kubernetes/kubernetes/pull/31854), [@humblec](https://github.com/humblec))
* Add logging for enabled/disabled API Groups ([#32198](https://github.com/kubernetes/kubernetes/pull/32198), [@deads2k](https://github.com/deads2k))