Refactor with adding unit test for OpenstackNetworkingUtil

Change-Id: Ie116b9215fb53ecc6a06d75da6d29ef2f2cb1d6a
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/web/OpenstackSecurityGroupRuleWebResource.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/web/OpenstackSecurityGroupRuleWebResource.java
index dc12860..009e941 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/web/OpenstackSecurityGroupRuleWebResource.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/web/OpenstackSecurityGroupRuleWebResource.java
@@ -36,7 +36,7 @@
 
 import static javax.ws.rs.core.Response.created;
 import static javax.ws.rs.core.Response.noContent;
-import static org.onosproject.openstacknetworking.util.OpenstackUtil.jsonToModelEntity;
+import static org.onosproject.openstacknetworking.util.OpenstackNetworkingUtil.jsonToModelEntity;
 
 /**
  * Handles Security Group Rule Rest API call from Neutron ML2 plugin.