fix problems with runing rabbitmq in HA environment

Until now rabbit server bind to virtual ip address, but some
services trying to communicate with rabbit cluster using controllers ip
addresses in management network. After this change rabbit server will
listen on interfaces in mgmt network and moreover haproxy will listen on
virtual ip to forward request to rabbit cluster.
Merge pull request #9 from michalskalski/master

fix problems with runing rabbitmq in HA environment