Revert "Removed code that was used as test fix for a letsencrypt issue."

Marius Burkard

2016-05-27 2a629844e8d67d6bc31d54e34ad1cda833c2e360

1
ALTER TABLE `client` ADD `default_slave_dnsserver` INT( 11 ) UNSIGNED NOT NULL DEFAULT '1' AFTER `limit_dns_zone`;