fix the issue that authorities record will be deleted mistakenly

apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/spi/configuration/AuthConfiguration.java

@@ -242,7 +242,7 @@ public class AuthConfiguration {
       jdbcUserDetailsManager
           .setCreateAuthoritySql("insert into `Authorities` (Username, Authority) values (?,?)");
       jdbcUserDetailsManager
-          .setDeleteUserAuthoritiesSql("delete from `Authorities` where id = (select u.id from (select id from `Users` where Username = ?) as u)");
+          .setDeleteUserAuthoritiesSql("delete from `Authorities` where id in (select a.id from (select id from `Authorities` where Username = ?) as a)");
       jdbcUserDetailsManager
           .setChangePasswordSql("update `Users` set Password = ? where id = (select u.id from (select id from `Users` where Username = ?) as u)");