Move remote_ tasks out of remote namespace

Tasks like pl:uber_rc and pl:uber_release call out to pl:remote_$task, but a
previous commit moved those tasks into the remote namespace, making them
pl:remote:remote_$task. This commit moves them out of the remote namespace into
just the pl namespace.
Merge pull request #111 from haus/fix_uber_rc

Move remote_ tasks out of remote namespace