CORD-1092: Brought VSG service over to xproto

Change-Id: I64885926eb055a270e11985a3f5648e30c735f65
diff --git a/xos/attic/vsgtenant_bottom.py b/xos/attic/vsgtenant_bottom.py
new file mode 100644
index 0000000..767a903
--- /dev/null
+++ b/xos/attic/vsgtenant_bottom.py
@@ -0,0 +1,11 @@
+def model_policy_vcpe(pk):
+    # TODO: this should be made in to a real model_policy
+    with transaction.atomic():
+        vcpe = VSGTenant.objects.select_for_update().filter(pk=pk)
+        if not vcpe:
+            return
+        vcpe = vcpe[0]
+        vcpe.manage_container()
+        vcpe.manage_vrouter()
+        vcpe.cleanup_orphans()
+