Code review comment for lp:~jameinel/launchpad/lp-service

I think your latest changes are basically ok. Some of it feels a bit cargo culted though -- I don't see the reason for the lazy getForker method, just stash the forker on the instance normally? and the atexit calls aren't needed imho. If you inherited the forker helper class from fixture, you'd be able to use addCleanup, which would probably be a bit cleaner. I'm not sure the big TODO comment about paths is warranted -- it's all true, but much of Launchpad suffers this problem. If you can de-cargo-cult a bit, I'll land this asap.