fix:修复user-center-backend-sql的脚本没有指定DB名的bug

sql/user-center-backend-sql/20190411.sql

+use `user-center`;
+
 create table `user-center`.user_info
 (
 	id int unsigned auto_increment,

sql/user-center-backend-sql/20190425.sql

+use `user-center`;
+
 CREATE UNIQUE INDEX user_info_username_uindex ON user_info (username);
 ALTER TABLE user_info MODIFY phone varchar(11) NOT NULL;
 CREATE UNIQUE INDEX user_info_phone_uindex ON user_info (phone);