MySQL auto-user provisioning support for Aurora and version check

[greedy52]

Related:

• Database Automatic User Provisioning support for MySQL #31902

Changes:

• Added supported version check
• Changed defaultSchema to teleport to support Aurora (Unlike RDS instance, Aurora doesn't allow procedure on built-in mysql database)

To create admin-user teleport-admin:

CREATE DATABASE IF NOT EXISTS teleport;
CREATE USER 'teleport-admin' IDENTIFIED WITH AWSAuthenticationPlugin AS 'RDS';
GRANT SELECT ON mysql.role_edges TO 'teleport-admin' ;
GRANT PROCESS, ROLE_ADMIN, CREATE USER ON *.* TO 'teleport-admin' ;
GRANT ALTER ROUTINE, CREATE ROUTINE, EXECUTE ON teleport.* TO 'teleport-admin' ;

[Tener]

I think we should add the ability to override the defaultSchema() value; maybe through labels on the db? Given the problems with Aurora, this may be handy in some other setups too.

[greedy52]

I think we should add the ability to override the defaultSchema() value; maybe through labels on the db? Given the problems with Aurora, this may be handy in some other setups too.

Yes. I am planning to add it when implementing MariaDB. Will backport MySQl/MariaDB together to v14 once its done.