Add more Keepalived VIP instances

This change adds classes for configuring the following VIP addresses:

 - StackLight log cluster
 - StackLight telemetry cluster
 - OpenStack telemetry cluster (Ceilometer)
diff --git a/ceilometer/server/cluster.yml b/ceilometer/server/cluster.yml
index 63111fd..005379d 100644
--- a/ceilometer/server/cluster.yml
+++ b/ceilometer/server/cluster.yml
@@ -1,7 +1,7 @@
 classes:
 - service.ceilometer.server.cluster
 - system.haproxy.proxy.listen.openstack.ceilometer
-- service.keepalived.cluster.single
+- system.keepalived.cluster.instance.openstack_telemetry_vip
 - service.haproxy.proxy.single
 parameters:
   ceilometer: