AbstractYangModelRegistrator updated to allow apps to attach end-points to the service models

Change-Id: I2f893d0f77730cecae961bb9233aefe3c49cf4b1
diff --git a/apps/l3vpn/netl3vpn/BUCK b/apps/l3vpn/netl3vpn/BUCK
index d4d436a..4028606 100644
--- a/apps/l3vpn/netl3vpn/BUCK
+++ b/apps/l3vpn/netl3vpn/BUCK
@@ -5,6 +5,7 @@
   '//core/store/serializers:onos-core-serializers',
   '//lib:onos-yang-model',
   '//lib:onos-yang-runtime',
+  '//apps/yang:onos-apps-yang',
 ]
 
 TEST_DEPS = [