Code review comment for lp:~allenap/maas/packaging--upstart-workers--bug-1452276

I can't get restarts to work when putting all the stuff in a single service definition. I've asked Adam Conrad for help. In the meantime please consider landing this. It's only a cosmetic difference, but it's costing a fortune in lost time for me. In addition, using separate service definitions is easier to reason about and understand; smooshing everything into one is somewhat hacky.