Adding example Multicast Route Json files

Change-Id: I47b0661cd56df0b991f727512b3c50f8c238671c
(cherry picked from commit 29e5e11907407b4fa03ef9a199b35ee76092ee7d)
diff --git a/apps/mcast/web/src/main/java/org/onosproject/mcast/web/McastRouteWebResource.java b/apps/mcast/web/src/main/java/org/onosproject/mcast/web/McastRouteWebResource.java
index 26e3317..ffe6e65 100644
--- a/apps/mcast/web/src/main/java/org/onosproject/mcast/web/McastRouteWebResource.java
+++ b/apps/mcast/web/src/main/java/org/onosproject/mcast/web/McastRouteWebResource.java
@@ -127,7 +127,7 @@
     }
 
     /**
-     * Get all sinks connect points for a multicast route.
+     * Get all HostId sinks and their connect points for a multicast route.
      *
      * @param group group IP address
      * @param srcIp source IP address