Improve Analytics python packaging and testing time

Currently we have a process ref. testing and packaging python packages related to analytics that can take several hours and maybe up to a few days worth of processing.

1. Setup the basic phpunit / behat test - it takes a while but it is manageable
2. Setup the sample database to test the "admin/tool/analytics/cli/evaluate_model.php" - this is the most time consuming (several hours, the database is about 3Gb)
3. This needs also to be run on the docker image once build
4. And then on the stable/current Moodle version (at least 3)

Currently this is partially automatised but would need maybe some specific script to make it less manual intensive:

• Help with the setup (with pew, so we can setup a clean virtual env)
• Automatically upload the sample database and run it in the background