Add test to assert cluster manager recovery.

Assert that when the cluster manager is killed and is restarted by the
supervisor, that all connections that should be established, are.

Assert this through configuring bidirectional replication and killing
the cluster manager on every node, in every cluster, and asserting that
connections are recovered.
Ensure that we wait for connections.

Wait for connections to be established before killing the connection
manager and verifying that they get reestablished.
Ensure we wait for the ring to converge after enabling.
Ensure we wait for the ring to converge after naming the cluster.
Merge pull request #470 from basho/feature/csm/replication2-connections

Add test to assert cluster manager recovery.