CORD-1177: Brought vOLT service over to xproto

Change-Id: Ia80b9bef655302694d7a48fde2aa16d04ae657a5
diff --git a/xos/attic/volttenant_bottom.py b/xos/attic/volttenant_bottom.py
new file mode 100644
index 0000000..d0935de
--- /dev/null
+++ b/xos/attic/volttenant_bottom.py
@@ -0,0 +1,11 @@
+def model_policy_volt(pk):
+    # TODO: this should be made in to a real model_policy
+    with transaction.atomic():
+        volt = VOLTTenant.objects.select_for_update().filter(pk=pk)
+        if not volt:
+            return
+        volt = volt[0]
+        volt.manage_vcpe()
+        volt.manage_subscriber()
+        volt.cleanup_orphans()
+