Revert "Configure rabbit and EPMD to bind to an address"

Since this breaks people using rabbit in the standard way, I
rather revert this change, and fork my own ops-messaging cookbook
since this is intended as an example cookbook (granted others
may use it directly).  This code would be better off in my
own fork, where i do not impact others, with a non-merged upstream
rabbitmq feature.

This reverts commit 3b35ac204d7b117e86cc51d72bfc4a927183a92a.

Change-Id: I53da70583c50ae985d3842c3d709eb81f565d63d