[ONOS-5096] Checkstyle issues fixed for generated code

Change-Id: I2821cde63def44a0dee916ee549e788ac4eef299
diff --git a/plugin/src/main/java/org/onosproject/yangutils/utils/UtilConstants.java b/plugin/src/main/java/org/onosproject/yangutils/utils/UtilConstants.java
index 23dacfe..580b6cf 100644
--- a/plugin/src/main/java/org/onosproject/yangutils/utils/UtilConstants.java
+++ b/plugin/src/main/java/org/onosproject/yangutils/utils/UtilConstants.java
@@ -761,7 +761,7 @@
     /**
      * Static attribute for get filter leaf flags.
      */
-    public static final String GET_FILTER_LEAF = "get_valueLeafFlags";
+    public static final String GET_FILTER_LEAF = "getValueLeafFlags";
 
     /**
      * Static attribute for getLeafIndex.
@@ -1398,6 +1398,21 @@
     public static final String ARRAY_LIST_IMPORT = IMPORT + COLLECTION_IMPORTS + ".ArrayList;\n";
 
     /**
+     * Static attribute for temp keyword.
+     */
+    public static final String TMP_VAR = "tmp";
+
+    /**
+     * Static attribute for unused keyword.
+     */
+    public static final String UNUSED = "UNUSED";
+
+    /**
+     * Static attribute for 1 keyword.
+     */
+    public static final String ONE = "1";
+
+    /**
      * Creates an instance of util constants.
      */
     private UtilConstants() {