Replication controller

Development branch to support k8s replication controller.

In progress, unstable. Use at your own risk.
This is refactored code, the functionality is the same (at least it should be). `checkForLostPodTask` ultimately checks to see if the pod is still registered w/ docker. If it's no longer registered it sends a TASK_LOST if we're still supposed to be tracking the task. Either way, if the pod is no longer running in docker, we stop monitoring it. I'll add some TODO's for better state cleanup in case of TASK_LOST.