Deploy existing pseudowires when segment routing is activated

Change-Id: Id09deb8841a65ad6ee7840830e047123196fa26f
diff --git a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/SegmentRoutingManager.java b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/SegmentRoutingManager.java
index 62ad763..6d5d0b2 100644
--- a/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/SegmentRoutingManager.java
+++ b/apps/segmentrouting/src/main/java/org/onosproject/segmentrouting/SegmentRoutingManager.java
@@ -436,6 +436,8 @@
         multicastRouteService.addListener(mcastListener);
         routeService.addListener(routeListener);
 
+        l2TunnelHandler.init();
+
         log.info("Started");
     }