[4266],[4267],[4268] Defect fix of special characters support for attributes

Change-Id: Ibf79749eb667627a592fcc7325021a32e73e11b4
diff --git a/utils/yangutils/src/test/java/org/onosproject/yangutils/parser/impl/listeners/RevisionListenerTest.java b/utils/yangutils/src/test/java/org/onosproject/yangutils/parser/impl/listeners/RevisionListenerTest.java
index ee42d28..a5eeb04 100644
--- a/utils/yangutils/src/test/java/org/onosproject/yangutils/parser/impl/listeners/RevisionListenerTest.java
+++ b/utils/yangutils/src/test/java/org/onosproject/yangutils/parser/impl/listeners/RevisionListenerTest.java
@@ -73,6 +73,6 @@
     public void processWithoutRevision() throws IOException, ParserException {
 
         YangNode node = manager.getDataModel("src/test/resources/RevisionAbsence.yang");
-        assertThat(((YangModule) node).getRevision().getRevDate(),   notNullValue());
+        assertThat(((YangModule) node).getRevision().getRevDate(), notNullValue());
     }
 }
\ No newline at end of file
diff --git a/utils/yangutils/src/test/java/org/onosproject/yangutils/parser/impl/listeners/SubModuleListenerTest.java b/utils/yangutils/src/test/java/org/onosproject/yangutils/parser/impl/listeners/SubModuleListenerTest.java
index 6e87272..6a53cbe 100644
--- a/utils/yangutils/src/test/java/org/onosproject/yangutils/parser/impl/listeners/SubModuleListenerTest.java
+++ b/utils/yangutils/src/test/java/org/onosproject/yangutils/parser/impl/listeners/SubModuleListenerTest.java
@@ -109,7 +109,7 @@
         // Checks for the version value in data model tree.
         assertThat(yangNode.getBelongsTo().getPrefix(), is("On1"));
         //Checks the revision with current date is created for empty revision statement.
-        assertThat(((YangSubModule) node).getRevision().getRevDate(),   notNullValue());
+        assertThat(((YangSubModule) node).getRevision().getRevDate(), notNullValue());
     }
 
     /**