Don't reference MariaDB in Mysql example

[smk4664]

Since Nautobot does not officially support MariaDB, we should not recommend it in the nautobot-docker-compose/docker-compose.mysql.yaml file.

    Although we cannot officially support MariaDB at this time, we did do a little research to address this issue for you.

I confirmed that if you explicitly pip install django-mptt==0.11.0 for your Nautobot installation, that this issue is alleviated. Note, however, that pip will complain about the version conflict with Nautobot's requirements, but it's just a warning that can be safely ignored in this case.

Since there are no other dependencies or conflicts with django-mptt, this should be fine for now in your deployment. Also, we do plan to get rid of this library in our v2.0.0 release, so this issue will also no longer be a concern.

I'll be closing this issue. Thanks for reporting it!

Originally posted by @jathanism in nautobot/nautobot#1724 (comment)

[jvanderaa]

Interesting that this worked on the example sent.