fix bugs

migrations/mysql/02007_adapte_rule.sql

@@ -1,9 +1,3 @@
--- migrate:up
 ALTER TABLE `server_rule_group`
 ADD COLUMN `default` TINYINT(1) NOT NULL DEFAULT 0 COMMENT 'Is Default Group',
 ADD COLUMN `type` VARCHAR(100) NOT NULL DEFAULT '' COMMENT 'Rule Group Type';
--- migrate:down
-ALTER TABLE `server_rule_group`
-DROP COLUMN `default`,
-DROP COLUMN `type`;
-