Adding rest API for new Mcast app

Change-Id: I8879879f0406295b61db11b9a66efef4acc0b0c1
diff --git a/apps/mcast/impl/src/main/java/org/onosproject/mcast/impl/MulticastRouteManager.java b/apps/mcast/impl/src/main/java/org/onosproject/mcast/impl/MulticastRouteManager.java
index 43b145c..055d8de 100644
--- a/apps/mcast/impl/src/main/java/org/onosproject/mcast/impl/MulticastRouteManager.java
+++ b/apps/mcast/impl/src/main/java/org/onosproject/mcast/impl/MulticastRouteManager.java
@@ -158,6 +158,14 @@
     }
 
     @Override
+    public void addSinks(McastRoute route, HostId hostId, Set<ConnectPoint> sinks) {
+        if (checkRoute(route)) {
+            store.addSink(route, hostId, sinks);
+        }
+
+    }
+
+    @Override
     public void addSink(McastRoute route, Set<ConnectPoint> sinks) {
         checkNotNull(route, "Route cannot be null");
         checkNotNull(sinks, "Sinks cannot be null");