Bump up openstack4j to 3.1.0 with dependency updated

Change-Id: If8bef8a9e9ebd71b32433555bfdaed406f7e40c3
diff --git a/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSyncStateCommand.java b/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSyncStateCommand.java
index 24308ff..e89141b 100644
--- a/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSyncStateCommand.java
+++ b/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/cli/OpenstackSyncStateCommand.java
@@ -28,7 +28,7 @@
 import org.onosproject.openstacknetworking.api.OpenstackSecurityGroupService;
 import org.openstack4j.api.OSClient;
 import org.openstack4j.api.exceptions.AuthenticationException;
-import org.openstack4j.model.identity.Access;
+import org.openstack4j.model.identity.v2.Access;
 import org.openstack4j.model.network.IP;
 import org.openstack4j.model.network.NetFloatingIP;
 import org.openstack4j.model.network.Network;
@@ -90,7 +90,7 @@
 
         Access osAccess;
         try {
-            osAccess = OSFactory.builder()
+            osAccess = OSFactory.builderV2()
                     .endpoint(this.endpoint)
                     .tenantName(this.tenant)
                     .credentials(this.user, this.password)