KAZOO-2560 - CAMP-ON feature

It is a bad idea to include code from another application in here. The expectation will be, eventually, to package each app (callflow, crossbar, stepswitch, camper, etc) as its own RPM, so the source/beam files won't necessarily exist on every server running a VM. Starting camper workers should be done via AMQP messaging from here in callflows. See cf_pivot (though I think it is naughty and uses a wapi_pivot module defined in the pivot app; something to rectify there too) for passing the request from callflow to pivot via AMQP instead of directly calling into the camper application code.

Questions?