GitLab

* Explicitly lock/unlock images via RPC when checking them.
* Better handling of individual partition images in image bundle.
* Fixes.

Also properly integrate UE class into os_load process.

Also transition log message prefixes to "tbadb_serv"

Rename to properly convey evolution to stand alone server.

And add some related locking.

Instead of using SSH as the transport.  Soooooo much simpler on
the client side now!