[ONOS-4616] grouping linker issues fixed and other defect fixed.

Change-Id: I1b23f9ed0293edbc2d551efe82982559eb916ede
diff --git a/utils/yangutils/src/test/resources/ValidNotificationStatement.yang b/utils/yangutils/src/test/resources/ValidNotificationStatement.yang
index 7e6bc17..1e0f144 100644
--- a/utils/yangutils/src/test/resources/ValidNotificationStatement.yang
+++ b/utils/yangutils/src/test/resources/ValidNotificationStatement.yang
@@ -14,7 +14,7 @@
            type int32;
         }
         leaf if-name {
-           type leafref;
+           type string;
         }
         leaf if-admin-status {
            type P:admin-status;