replace DNS_SEC_KEY with BIND_KEY

Change-Id: I76319844506b1dd4d6690a396fc83c48a0198164
include mongo replica set config in broker 1. delay using sleep for now

Change-Id: Id35f729c0bb01b28651a421b01fb5c2dbf57131c
change all references to fixed IPs to floating

Change-Id: Id2b74b1590de67b1c277e0fa900830775a823773