convert beaver and logstash to talk through zeromq via HA-proxy
removing stuff no longer needed since usin beaver/zmq
fixups to the beaver-zmq migration after testing
Revert "always use VIP to connect to rabbitmq"

This reverts commit 91ebda1efe98622b8b3c597af6fad5dd1dee85bc.
when losing the VIP, services that keep long connections to the VIP require a restart in order to reconnect to the VIP now that it's on another host
Merge pull request #23 from pchandra/beaver-zmq

Tested fairly well so merging