changed regex accoding to stable-Commit 494da4537eebd83df409fcd0492039382d0...

root

2014-02-15 69425c3dae9d0145ee0bd1aa6b6a3d7a800bf870

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ALTER TABLE `dns_slave` DROP INDEX `origin`;
ALTER TABLE `dns_slave` ADD CONSTRAINT `slave` UNIQUE (`origin`,`server_id`);