Kubernaut Administrative Control Endpoint

[plombardi89]

A way to communicate with the Kubernetes cluster before instance termination so we can initiate shutdown and cleanup of user created load balancers or volumes.

When a claim is released we would send an instruction to the agent which in turn would perform operations on the Kubernetes master that cleanup cloud resources. This could be implemented in a number of ways, but as an HTTP endpoint or SSH sent command are the two most likely.