Implement replicaLoadBalancer boolean flag. (#38)

The flag adds a replica service with the name cluster_name-repl and
a DNS name that defaults to {cluster}-repl.{team}.{hostedzone}.

The implementation converted Service field of the cluster into a map
with one or two elements and deals with the cases when the new flag
is changed on a running cluster
(the update and the sync should create or delete the replica service).
In order to pick up master and replica service and master endpoint
when listing cluster resources.

* Update the spec when updating the cluster.

pkg/controller/pod.go

@@ -62,7 +62,7 @@ func (c *Controller) podAdd(obj interface{}) {
 	}
 
 	podEvent := spec.PodEvent{
-		ClusterName:     c.PodClusterName(pod),
+		ClusterName:     c.podClusterName(pod),
 		PodName:         util.NameFromMeta(pod.ObjectMeta),
 		CurPod:          pod,
 		EventType:       spec.EventAdd,
@@ -84,7 +84,7 @@ func (c *Controller) podUpdate(prev, cur interface{}) {
 	}
 
 	podEvent := spec.PodEvent{
-		ClusterName:     c.PodClusterName(curPod),
+		ClusterName:     c.podClusterName(curPod),
 		PodName:         util.NameFromMeta(curPod.ObjectMeta),
 		PrevPod:         prevPod,
 		CurPod:          curPod,
@@ -102,7 +102,7 @@ func (c *Controller) podDelete(obj interface{}) {
 	}
 
 	podEvent := spec.PodEvent{
-		ClusterName:     c.PodClusterName(pod),
+		ClusterName:     c.podClusterName(pod),
 		PodName:         util.NameFromMeta(pod.ObjectMeta),
 		CurPod:          pod,
 		EventType:       spec.EventDelete,

pkg/controller/util.go

@@ -115,7 +115,7 @@ Users:
 	return result, nil
 }
 
-func (c *Controller) PodClusterName(pod *v1.Pod) spec.NamespacedName {
+func (c *Controller) podClusterName(pod *v1.Pod) spec.NamespacedName {
 	if name, ok := pod.Labels[c.opConfig.ClusterNameLabel]; ok {
 		return spec.NamespacedName{
 			Namespace: pod.Namespace,