[FAST_BUILD] Pass params natively to pytest

[mathbunnyru]

Describe your changes

It's a bit more verbose, but it should be used instead of env variables.
Also, makes --help behave nicely and tells early (and in a readable way) that some parameter is missing.

Issue ticket if applicable

Checklist (especially for first-time contributors)

• I have performed a self-review of my code
• If it is a core feature, I have added thorough tests
• I will try not to use force-push to make the review process easier for reviewers
• I have updated the documentation for significant changes