Set R-bit in neighbor advertisement if replying as a router

Change-Id: Ic51140cf7ab88064df0bc87fb4d1fbc976ce7bc7
diff --git a/apps/segmentrouting/app/src/main/java/org/onosproject/segmentrouting/ArpHandler.java b/apps/segmentrouting/app/src/main/java/org/onosproject/segmentrouting/ArpHandler.java
index af62525..cfef0f1 100644
--- a/apps/segmentrouting/app/src/main/java/org/onosproject/segmentrouting/ArpHandler.java
+++ b/apps/segmentrouting/app/src/main/java/org/onosproject/segmentrouting/ArpHandler.java
@@ -107,7 +107,7 @@
                         pkt.inPort().deviceId(), pkt.sender());
                 return;
             }
-            sendResponse(pkt, targetMac, hostService);
+            sendResponse(pkt, targetMac, hostService, true);
         } else {
             // NOTE: Ignore ARP packets except those target for the router
             //       We will reconsider enabling this when we have host learning support