MT#15883 adapt rtcsessions table

for the more elaborate workflow

Change-Id: Ic816fd7ee30e066c8bfc427f69fbb42286212820

db_scripts/diff/15213.down

@@ -0,0 +1,3 @@
+USE provisioning;
+
+ALTER TABLE `provisioning`.`rtc_session` DROP COLUMN `rtc_network_tag`;

db_scripts/diff/15213.up

@@ -0,0 +1,4 @@
+USE provisioning;
+
+ALTER TABLE `provisioning`.`rtc_session`
+    ADD COLUMN `rtc_network_tag` VARCHAR(45) NOT NULL;