Fix k8s keepalived interface in k8s-ha-calico-flannel-virtlet

Change-Id: I6a8f49e4c8826f4b41f345d58613eb92c7e52fcb
diff --git a/classes/cluster/k8s-ha-calico-flannel-virtlet/kubernetes/control.yml b/classes/cluster/k8s-ha-calico-flannel-virtlet/kubernetes/control.yml
index d0c621b..e2f9c30 100644
--- a/classes/cluster/k8s-ha-calico-flannel-virtlet/kubernetes/control.yml
+++ b/classes/cluster/k8s-ha-calico-flannel-virtlet/kubernetes/control.yml
@@ -12,7 +12,7 @@
 - cluster.k8s-ha-calico-flannel-virtlet.infra
 parameters:
   _param:
-    keepalived_k8s_apiserver_vip_interface: ${_param:primary_interface}
+    keepalived_k8s_apiserver_vip_interface: ${_param:control_interface}
     keepalived_k8s_apiserver_vip_address: ${_param:kubernetes_control_address}
     keepalived_k8s_apiserver_vip_password: password
   etcd: