PIM: contribute source port information to multicast store

Change-Id: Id154f5043ec1913c69de320d3bca3245585683aa
diff --git a/apps/pim/src/main/java/org/onosproject/pim/impl/PimInterfaceManager.java b/apps/pim/src/main/java/org/onosproject/pim/impl/PimInterfaceManager.java
index 65c5544..654986e 100644
--- a/apps/pim/src/main/java/org/onosproject/pim/impl/PimInterfaceManager.java
+++ b/apps/pim/src/main/java/org/onosproject/pim/impl/PimInterfaceManager.java
@@ -235,6 +235,8 @@
             return;
         }
 
+        multicastRouteService.addSource(route, pimInterface.getInterface().connectPoint());
+
         routes.put(route, pimInterface);
     }