Refactor with adding unit test for OpenstackNetworkingUtil

Change-Id: Ie116b9215fb53ecc6a06d75da6d29ef2f2cb1d6a
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/util/OpenstackUtil.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/util/OpenstackNetworkingUtil.java
similarity index 95%
rename from apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/util/OpenstackUtil.java
rename to apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/util/OpenstackNetworkingUtil.java
index 5fee7cc..ffd5ab7 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/util/OpenstackUtil.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/util/OpenstackNetworkingUtil.java
@@ -30,14 +30,14 @@
 /**
  * An utility that used in openstack networking app.
  */
-public final class OpenstackUtil {
+public final class OpenstackNetworkingUtil {
 
-    protected static final Logger log = LoggerFactory.getLogger(OpenstackUtil.class);
+    protected static final Logger log = LoggerFactory.getLogger(OpenstackNetworkingUtil.class);
 
     /**
      * Prevents object instantiation from external.
      */
-    private OpenstackUtil() {
+    private OpenstackNetworkingUtil() {
     }
 
     /**