CORD-1253 move from VRouterTenant to AddressManagerServiceInstance

Change-Id: I159c81a5ea4dc9c0d4e5c54cc92c3a6a669c1a48
diff --git a/xos/attic/header.py b/xos/attic/header.py
index d3d30ed..7883c2d 100644
--- a/xos/attic/header.py
+++ b/xos/attic/header.py
@@ -24,7 +24,7 @@
 from operator import itemgetter, attrgetter, methodcaller
 from core.models import Tag
 from core.models.service import LeastLoadedNodeScheduler
-from services.vrouter.models import VRouterService, VRouterTenant
+from services.addressmanager.models import AddressManagerService, AddressManagerServiceInstance
 import traceback
 from xos.exceptions import *
 from django.contrib.contenttypes.models import ContentType