CORD-1083 move CordSubscriberRoot to rcord repo

Change-Id: I153668a67abcf0ab461b59ed3ed6a63afcf5f7c4
diff --git a/xos/tosca/resources/VOLTTenant.py b/xos/tosca/resources/VOLTTenant.py
index 50b255b..82158a1 100644
--- a/xos/tosca/resources/VOLTTenant.py
+++ b/xos/tosca/resources/VOLTTenant.py
@@ -1,5 +1,6 @@
 from core.models import User
-from services.volt.models import VOLTTenant, VOLTService, CordSubscriberRoot, VOLT_KIND
+from services.volt.models import VOLTTenant, VOLTService, VOLT_KIND
+from services.rcord.models import CordSubscriberRoot
 
 from xosresource import XOSResource