CORD-2753 volt service default owner

Change-Id: I2a2d00416e94aaa253073d4573d891522502962e
diff --git a/xos/synchronizer/models/volt.xproto b/xos/synchronizer/models/volt.xproto
index e1f5ddf..3751e48 100644
--- a/xos/synchronizer/models/volt.xproto
+++ b/xos/synchronizer/models/volt.xproto
@@ -8,6 +8,7 @@
 message VOLTTenant (ServiceInstance){
      option kind = "vOLT";
      option verbose_name = "vOLT Tenant";
+     option owner_class_name = "VOLTService";
 
      optional int32 s_tag = 1 [help_text = "s-tag", null = True, db_index = False, blank = True];
      optional int32 c_tag = 2 [help_text = "c-tag", null = True, db_index = False, blank = True];