Update instance state upon start/stop

I don't think lib/ctl.js should interact with/depend on the lb app and it's models. I'm hoping to move all the lb model interactions out of lib/server.js and into some othe location, maybe server/models, so that the lb stuff doesn't crawl every where through the code.

Is there any way you can emit an event or a callback up to lib/server.js, for now, and let it interact with the app and the models?