[ONOS-5141],[ONOS-5142],[ONOS-5165],[ONOS-4881],[ONOS-4889],[ONOS-5104],[ONOS-5138] defect fixes

Change-Id: I435dc0cf9afae7230fc98b57f33af104e0e38e67
diff --git a/plugin/src/main/java/org/onosproject/yangutils/parser/impl/listeners/ImportListener.java b/plugin/src/main/java/org/onosproject/yangutils/parser/impl/listeners/ImportListener.java
index 76a2e30..1f7a7d7 100644
--- a/plugin/src/main/java/org/onosproject/yangutils/parser/impl/listeners/ImportListener.java
+++ b/plugin/src/main/java/org/onosproject/yangutils/parser/impl/listeners/ImportListener.java
@@ -90,6 +90,7 @@
         int errorPosition = ctx.getStart().getCharPositionInLine();
         importNode.setLineNumber(errorLine);
         importNode.setCharPosition(errorPosition);
+        importNode.setFileName(listener.getFileName());
 
         // Push import node to the stack.
         listener.getParsedDataStack().push(importNode);