Always send a tenant id when sending a router command

Now that we have a class in the CLI that knows how to look up a router
id and get the tenant id, always use it. That should avoid having
spurious messages for debugging and managing routers ending up in the
wrong worker process.

Change-Id: I21edc898d5d94ced3af8db375cf4d919ba3c6e68
make request logging quieter

Change-Id: I5b55ff3ca8839d58e83eb0b789843f55c99e31ac
Merge pull request #178 from dhellmann/unify-router-cli-commands

Always send a tenant id when sending a router command