[ONOS-3880, 3881] Yang Listener for Module and Sub-Module

Change-Id: Iee75c3e04af9b66ebc38acb3396aa4c54af5a268
diff --git a/utils/yangutils/src/test/resources/ImportValidEntry.yang b/utils/yangutils/src/test/resources/ImportValidEntry.yang
new file mode 100644
index 0000000..b725d39
--- /dev/null
+++ b/utils/yangutils/src/test/resources/ImportValidEntry.yang
@@ -0,0 +1,10 @@
+module Test {
+yang-version 1;
+namespace urn:ietf:params:xml:ns:yang:ietf-ospf;
+prefix On;
+import ietf {
+prefix On2;
+revision-date 2015-02-03;
+}
+contact "Test";
+}