YANG uses and UT

Change-Id: Id3ec5cfed2b8e2a7d2d580786c70b5804f03ecfa
diff --git a/utils/yangutils/src/test/resources/UsesInList.yang b/utils/yangutils/src/test/resources/UsesInList.yang
index b79e7b1..6ac7795 100644
--- a/utils/yangutils/src/test/resources/UsesInList.yang
+++ b/utils/yangutils/src/test/resources/UsesInList.yang
@@ -4,7 +4,9 @@
     prefix Ant;
     import ietf-yang-types {
              prefix "P";
-         }
+         }    
+    grouping endpoint {
+    }
     list valid {
         key address;
         leaf address {