Refactor logic around unsupported command

Check if supported before querying for auth record and keyrotation
Do not log when unsupported

Tested: gpaste/4541942956032000

Google-Bug-Id: 435699868
Google-Bug-Id: 435214999

Change-Id: Iab5703ef4c8b1b9fb85aa8d7683411d14eecb75b
Signed-off-by: Christian Kungler <ckungler@google.com>
7 files changed