Convert all params from CamelCase to under_score for consistency

Change-Id: If4f9d40fc266a33c4fd4ebee351b766fb5aef1f7
Delay creating mongo replica set until other broker hosts available

MongoDB requires all members of the replica set be up when
initiating the replica set. This change delays the creation of
the rs until the other brokers have had a chance to reboot. The
openshift.sh script is used by setting the CONF_ACTIONS env var.

Change-Id: Id3d92c4a46b88b1816994c13a2c07dd33709d4d9