More aspects of the cluster configuration to get fleshed out later,
but a basic cluster like one would use for a live deployment
can now be instantiated and run under supervision. The new
clusterized-pcap-processing supervisor mode is also not done yet.
The process hierarchy and all supervisor control commands are now
working (e.g. status, create, destroy, restart), but nodes are
not currently spawned with the desired configuration parameters so
they don't yet operate as real cluster nodes (e.g. worker, logger,
manager, proxy).
