bug CS-14890: Set vnc password for removed Vms as empty. vnc_password is not null column.

status CS-14890: resolved fixed
reviewed-by: Nitin

Author: kishan

setup/db/db/schema-2214to30.sql

@@ -742,4 +742,4 @@ UPDATE `cloud`.`networks` n  SET n.display_text=(CONCAT('guestNetworkForBasicZon
 
 UPDATE `cloud`.`configuration` SET description='Bypass internal dns, use exetrnal dns1 and dns2' WHERE name='use.external.dns';
 UPDATE `cloud`.`configuration` SET category='Alert' WHERE name='capacity.check.period';
-UPDATE `cloud`.`vm_instance` SET vnc_password = null where removed is not null;
+UPDATE `cloud`.`vm_instance` SET vnc_password = '' where removed is not null;