ONOS-7451 ODTN TAPI connectivity service.

(still JSON cannot be converted to DataNode)

Completed with RPC PoC for ONOS-7451

Fixed style errors (import Yang classes > 120)

Change-Id: Ie565576a604ee1ccf3d046e7e461c1d132234e8f
diff --git a/models/tapi/src/main/yang/tapi-connectivity@2018-02-16.yang b/models/tapi/src/main/yang/tapi-connectivity@2018-02-16.yang
index 45f89de..f5bc637 100644
--- a/models/tapi/src/main/yang/tapi-connectivity@2018-02-16.yang
+++ b/models/tapi/src/main/yang/tapi-connectivity@2018-02-16.yang
@@ -676,6 +676,7 @@
             description "none";

             input {

                 list end-point {

+                    key 'local-id';
                     min-elements 2;

                     uses connectivity-service-end-point;

                     description "none";