Return true from interface walker.

Currently resync result was resturned. However that result has nothing to do
with continuation of walk. So return true always to finish all interface walk.

Change-Id: I8a397c8a77a0dfc70a592454df252adcf4c40e98
Closes-bug: 1543478

src/vnsw/agent/oper/interface.cc

@@ -311,7 +311,8 @@ bool InterfaceTable::L2VmInterfaceWalk(DBTablePartBase *partition,
     VmInterfaceGlobalVrouterData data(vn->bridging(),
                                       vn->layer3_forwarding(),
                                       vn->GetVxLanId());
-    return vm_intf->Resync(this, &data);
+    vm_intf->Resync(this, &data);
+    return true;
 }
 
 void InterfaceTable::VmInterfaceWalkDone(DBTableBase *partition) {