TT#66577 Add new columns 'id' PK and 'peer_host_id' INT to the 'kamailio.sems_registrations'

New columns:
- 'id' - new PK for the 'sems_registrations'
- 'peer_host_id' - for filling it with IDs of SIP peerings

Remark: 'peer_host_id' and 'subscriber_id' must be null by default.

Change-Id: I7ecaa42e540a96a5d6835a78e391adc909aab111

db_scripts/diff/15689.down

@@ -0,0 +1,7 @@
+use kamailio;
+ALTER TABLE kamailio.sems_registrations
+  DROP PRIMARY KEY,
+  MODIFY `subscriber_id` int(11) NOT NULL,
+  ADD PRIMARY KEY (`subscriber_id`),
+  DROP COLUMN `id`,
+  DROP COLUMN `peer_host_id`;

db_scripts/diff/15689.up

@@ -0,0 +1,6 @@
+use kamailio;
+ALTER TABLE kamailio.sems_registrations
+  DROP PRIMARY KEY,
+  ADD COLUMN `id` INT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
+  ADD COLUMN `peer_host_id` int(10) UNSIGNED DEFAULT NULL,
+  MODIFY `subscriber_id` int(10) UNSIGNED DEFAULT NULL;