Automatic merge from submit-queue (batch tested with PRs 41984, 41682, 41924, 41928)

Add options to kubefed telling it to generate HTTP Basic and/or token credentials for the Federated API server

fixes #41265.

**Release notes**:
```release-note
Adds two options to kubefed, `-apiserver-enable-basic-auth` and `-apiserver-enable-token-auth`, which generate an HTTP Basic username/password and a token respectively for the Federated API server.
```