Seems like you can't have a node as its own seed when it's listening on
an interface instead of an IP. At least the way it was done in the
test doesn't work and I can't figure out any other way than to just
listen on the IP address instead.
The module will configure a Cassandra server with common options being
tweakable. Included is also a test which will spin up 3 nodes and
verify that the cluster can be formed, broken, and repaired.
