symbiosis-test skips phpmyadmin tests

It looks like due to the changes to MariaDB, the tests which expect to log in to phpmyadmin as root/debian-sys-maint are failing.

Skipping phpmyadmin debian-sys-maint auth test - password not found.
Skipping phpmyadmin root auth test - password not found.

This should be fairly simple to fix to use the generated 'admin' username/password, and ensure the passwordless logins fail.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information