Automatic merge from submit-queue (batch tested with PRs 49868, 50143, 49377, 50141, 50145)

Return Audit-Id http response header for trouble shooting

Users can use Audit-Id http response header to grep the audit events in log.
This provides a fast way to find the events in audit.
**Release note**:

```
Audit-Id HTTP header is included in the apiserver responses for audited requests, except some cases when it's not possible, e.g. pods/exec.
```
@sttts @tallclair