Use nopreempt for keepalived

Without this option the vip will always bounce to the highest priority
node that is up. So if you reboot the highest priority node the vip
will fail to the second highest. When the highest priority node
recovers it will claim the vip again leaving you will two fail overs
rather than one.

TrivialFix

Change-Id: I4a3c6c10eee391cdbdd80c44a71a9fafd1069944

ansible/roles/haproxy/templates/keepalived.conf.j2

@@ -6,7 +6,8 @@ vrrp_script check_alive {
 }
 
 vrrp_instance kolla_internal_vip {
-    state MASTER
+    state BACKUP
+    nopreempt
     interface {{ api_interface }}
     virtual_router_id 51
     priority {{ groups['haproxy'].index(inventory_hostname) + 1 }}
@@ -25,7 +26,8 @@ vrrp_instance kolla_internal_vip {
 
 {% if haproxy_enable_external_vip | bool %}
 vrrp_instance kolla_external_vip {
-    state MASTER
+    state BACKUP
+    nopreempt
     interface {{ kolla_external_vip_interface }}
     virtual_router_id 52
     priority {{ groups['haproxy'].index(inventory_hostname) + 1 }}