Migrate server db to be MySql in production

[techsmyth]

Description

As a sysadmin I want to have less database types in production

Acceptance criteria

• [ ] Server db migrated to mariadb in all environments (prod, acc, dev, ...)
• [ ] Maria db container removed from cluster definitions
• [ ] Scripts, such as backup / restore, updated

Additional Context

[valentinyanakiev]

MySQL and MySQL cluster are different, so I don't think we need that intermediate step