CORD-1177: Brought vOLT service over to xproto

Change-Id: Ia80b9bef655302694d7a48fde2aa16d04ae657a5
diff --git a/xos/volt-onboard.yaml b/xos/volt-onboard.yaml
index 40e08bb..7dd281b 100644
--- a/xos/volt-onboard.yaml
+++ b/xos/volt-onboard.yaml
@@ -13,7 +13,7 @@
           base_url: file:///opt/xos_services/olt/xos/
           # The following will concatenate with base_url automatically, if
           # base_url is non-null.
-          models: models.py
+          xproto: ./
           admin: admin.py
           admin_template: templates/voltadmin.html
           #synchronizer: synchronizer/manifest