Automatic merge from submit-queue (batch tested with PRs 60158, 60156, 58111, 57583, 60055). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
add support for /token subresource in serviceaccount registry
I'm planning on implementing the registry bits (this) in one PR and followup with an authenticator that supports new id tokens.
https://github.com/kubernetes/kubernetes/issues/58790
@kubernetes/sig-auth-pr-reviews
```release-note
NONE
```