CORD-2865 add creator to CordSubscriberRoot

Change-Id: I6a021750b2f3fa0935768bd251d317778f71de40
diff --git a/xos/synchronizer/models/rcord.xproto b/xos/synchronizer/models/rcord.xproto
index 53499e9..cc2ddd3 100644
--- a/xos/synchronizer/models/rcord.xproto
+++ b/xos/synchronizer/models/rcord.xproto
@@ -20,4 +20,5 @@
     optional int32 c_tag = 12 [null = True, db_index = False, blank = False];
     required string olt_device = 13 [help_text = "VOLTDevice device_id", null = False, db_index = False, blank = False];
     required string olt_port = 14 [help_text = "VOLTDevicePort port_id", null = False, db_index = False, blank = False];
+    optional manytoone creator->User:created_rcord_subscribers = 15 [db_index = True, null = True, blank = True];
 }