CORD-1010 refactor openstack synchronizer to use new_base

Change-Id: I4eb4e5131275faf69e1da05efc81a3d8d0d12296
diff --git a/xos/synchronizer/driver.py b/xos/synchronizer/driver.py
index e5ce2f8..1e795e4 100644
--- a/xos/synchronizer/driver.py
+++ b/xos/synchronizer/driver.py
@@ -1,7 +1,7 @@
 import commands
 import hashlib
 from xos.config import Config
-from core.models import Controller
+from synchronizers.new_base.modelaccessor import *
 
 try:
     from synchronizers.openstack.client import OpenStackClient