MT#8503 Enter a default lbrtp_set "None"

Just to get a proper select option in the panel.

db_scripts/diff/15095.up

@@ -3,3 +3,5 @@ use provisioning;
 SELECT id INTO @vpgid FROM voip_preference_groups WHERE name = 'NAT and Media Flow Control';
 INSERT INTO `voip_preferences` VALUES (NULL,@vpgid,'lbrtp_set','The cluster set used for SIP lb and RTP',0,1,0,1,1,0,now(),0,0,'enum',0,'Use a particular cluster set of load-balancers for SIP towards this endpoint (only for peers, as for subscribers it is defined by Path during registration) and of RTP relays (both peers and subscribers).');
 
+SELECT LAST_INSERT_ID() INTO @vpid;
+INSERT INTO voip_preferences_enum VALUES(NULL, @vpid, "None", NULL, 0, 1, 1, 0, NULL);