CORD-1010 refactor openstack synchronizer to use new_base

Change-Id: I4eb4e5131275faf69e1da05efc81a3d8d0d12296
diff --git a/xos/synchronizer/model_policies/model_policy_Image.py b/xos/synchronizer/model_policies/model_policy_Image.py
index c77d5bb..6d6982e 100644
--- a/xos/synchronizer/model_policies/model_policy_Image.py
+++ b/xos/synchronizer/model_policies/model_policy_Image.py
@@ -1,7 +1,6 @@
-def handle(image):
-    from core.models import Controller, ControllerImages, Image
-    from collections import defaultdict
+from synchronizers.new_base.modelaccessor import *
 
+def handle(image):
     if (image.kind == "container"):
         # container images do not get instantiated
         return