[ixpmanager] port utilisation and mariadb

[Peter]

Hi Barry,

> Anyway, the long and short of it is that since v5 (maybe v4) the
> requirements changed such that we only support MySQL.

Explains my issues with database/migrations/2020_09_03_153723_add_timestamps.php and 2021_04_14_101948_update_timestamps.php but otherwise all else seems to work well with MariaDB.

> You should be able to mysqldump your database and import it (hopefully
> with no or only minor edits) to MySQL 8.

Will try that

> 
> Hope that helps,

Indeed it does. Thank you

Regards
Peter