Fixing APIs generation

Change-Id: I5b05cbd6dca3fe9602c35db6c6280cefb72d86a6
diff --git a/xos/synchronizer/models/volt.xproto b/xos/synchronizer/models/volt.xproto
index 54a0474..68c4352 100644
--- a/xos/synchronizer/models/volt.xproto
+++ b/xos/synchronizer/models/volt.xproto
@@ -1,4 +1,5 @@
 option name = "volt";
+option app_label = "volt";
 
 message VOLTService (Service){
     option verbose_name = "vOLT Service";