MR on fork: Some cleanup, test updates

-The forked merge request test now tests it's componenets again, and seems to work every time (did this by reordering the branch updates so their is more time for update_branches to run) -- this could still technically fail, but after several runs it doesn't seem to.
-Removed todo in merge_request, pushed wrapping of grit down to the satellite
-updated action test to check flock status, made it nolonger pending
-moved all logging on failure to helper method in satellite
GITLAB-592

Change-Id: If0554ca35eedc3d3e8461f7d93d4b3939fa2cd75