[CORD-3108] Adding tests for vRouter synchronizer

Change-Id: I894342d90a1b52aa58f0f68ee89b8ee4e5986d8e
diff --git a/xos/synchronizer/steps/sync_routes.py b/xos/synchronizer/steps/sync_routes.py
index 5086933..96bbac4 100644
--- a/xos/synchronizer/steps/sync_routes.py
+++ b/xos/synchronizer/steps/sync_routes.py
@@ -16,7 +16,7 @@
 import requests
 from requests.auth import HTTPBasicAuth
 from synchronizers.new_base.syncstep import SyncStep, DeferredException
-from synchronizers.new_base.modelaccessor import VRouterStaticRoute
+from synchronizers.new_base.modelaccessor import VRouterStaticRoute, model_accessor
 
 from helpers import Helpers
 from multistructlog import create_logger