The heartbeat probe was making an assumption that the deployment will
always be an OSA one by using the group "utility_all" as a deployment
target. This change moves heartbeat to the first kibana three kibana
nodes by default which corrects the previous assumption.
Change-Id: Ic1b90eb94dd20dc2273542333de47bfd690af1dd
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>