* Remove `generate_tmp_path` as unnecessary after refactoring
* Add `check_positive_int` check for `-niter` CLI key
* Replace `TestConfDumper` with number of fixtures:
1. Save all test info in global `request` and `pytestconfig` fixtures
2. Add `test_info` fixture for retrieving test info from test
3. Add `prepare_tconf_with_refs` fixture for test conf dump