YANG augment's generated file name resolver implementation and UT fixes.

Change-Id: Ib960a15398a3b9f529f9ad28402d5bac539fb525
diff --git a/utils/yangutils/src/main/java/org/onosproject/yangutils/plugin/manager/YangUtilManager.java b/utils/yangutils/src/main/java/org/onosproject/yangutils/plugin/manager/YangUtilManager.java
index b88d5df..86203c6 100644
--- a/utils/yangutils/src/main/java/org/onosproject/yangutils/plugin/manager/YangUtilManager.java
+++ b/utils/yangutils/src/main/java/org/onosproject/yangutils/plugin/manager/YangUtilManager.java
@@ -52,7 +52,9 @@
 
 /**
  * Represents ONOS YANG utility maven plugin.
- * Goal of plugin is yang2java Execution phase in generate-sources requiresDependencyResolution at compile time.
+ * Goal of plugin is yang2java.
+ * Execution phase is generate-sources.
+ * requiresDependencyResolution at compile time.
  */
 @Mojo(name = "yang2java", defaultPhase = GENERATE_SOURCES, requiresDependencyResolution = COMPILE,
         requiresProject = true)