OpenStack: Keepalived add support for IPv6

This ports the BM fix from
openshift#1256 to
OpenStack platform

templates/master/00-master/openstack/files/openstack-keepalived-keepalived.yaml

@@ -4,7 +4,7 @@ path: "/etc/kubernetes/static-pod-resources/keepalived/keepalived.conf.tmpl"
 contents:
   inline: |
     vrrp_script chk_ocp {
-        script "/usr/bin/curl -o /dev/null -kLs https://0:6443/readyz"
+        script "/usr/bin/curl -o /dev/null -kLs https://localhost:6443/readyz"
         interval 1
         weight 50
     }
@@ -16,7 +16,7 @@ contents:
     # TODO: Improve this check. The port is assumed to be alive.
     # Need to assess what is the ramification if the port is not there.
     vrrp_script chk_ingress {
-        script "/usr/bin/curl -o /dev/null -kLs http://0:1936/healthz"
+        script "/usr/bin/curl -o /dev/null -kLs http://localhost:1936/healthz"
         interval 1
         weight 50
     }