Add inbound peering contract id to peer groups.

This will be needed for inbound call rating of peers.

db_scripts/diff/13127.down

@@ -0,0 +1,5 @@
+USE provisioning;
+
+ALTER TABLE voip_peer_groups DROP COLUMN inbound_peering_contract_id; 
+ALTER TABLE voip_peer_groups CHANGE COLUMN outbound_peering_contract_id
+  peering_contract_id INT(11) unsigned;

db_scripts/diff/13127.up

@@ -0,0 +1,6 @@
+USE provisioning;
+
+ALTER TABLE voip_peer_groups CHANGE peering_contract_id 
+  outbound_peering_contract_id int(11) unsigned;
+ALTER TABLE voip_peer_groups ADD COLUMN 
+  inbound_peering_contract_id int(11) unsigned;