[ONOS-6783] Data type handling in Data Node

Change-Id: I5d27e169f95e2a5af89a866c1d34281201c73c56
diff --git a/runtime/src/test/resources/yobTestYangFiles/simple-data-types.yang b/runtime/src/test/resources/yobTestYangFiles/simple-data-types.yang
index f6b64d2..599649f 100644
--- a/runtime/src/test/resources/yobTestYangFiles/simple-data-types.yang
+++ b/runtime/src/test/resources/yobTestYangFiles/simple-data-types.yang
@@ -267,5 +267,9 @@
     leaf lfenum1 {
         type tpdfun0;
     }
+
+    leaf inst-iden {
+        type instance-identifier;
+    }
   }
 }