Comment 3 for bug 1673715

Chatted with sileht about this. There are a few more things to take care of to have this working properly. Namely we should get rid of haproxy and configure the coordination_url like this:
ceilometer coordinaltion_url will change from redis://vip-redis/ to something like redis://host1?sentinel=<clustername>&sentinel_fallback=host2&sentinel_fallback=host3

We will also need to be rather careful about the timeouts. The pacemaker RA calls for a cli disconnect of the clients to speed up failover