[ONOS-4941][ONOS-4883][ONOS-4979]Grouping and uses interfile linking issue + defect fix

Change-Id: I5e8145f05d3ef570d4ecbbe885c93de172de0ea3
diff --git a/plugin/src/test/resources/interFileUsesInsideChildOfGrouping/ietf-te-types.yang b/plugin/src/test/resources/interFileUsesInsideChildOfGrouping/ietf-te-types.yang
new file mode 100644
index 0000000..96ce986
--- /dev/null
+++ b/plugin/src/test/resources/interFileUsesInsideChildOfGrouping/ietf-te-types.yang
@@ -0,0 +1,19 @@
+module ietf-te-types {
+
+    namespace "ietf-te-types";
+    prefix "te-types";
+
+    revision 2016-03-20 {
+        description "Latest revision of TE generic types";
+        reference "RFC3209";
+    }
+    grouping explicit-route-subobject {
+        choice type {
+            case ipv4-address {
+                leaf v4-address {
+                    type string;
+                }
+            }
+        }
+    }
+}