[Tests] parallelize (#3078)
* [Tests] parallelize
* finish folder structuring
* Parallelize tests more
* Correct saving of pipelines
* make sure logging level is correct
* try again
* Apply suggestions from code review
Co-authored-by: Pedro Cuenca <pedro@huggingface.co>
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Co-authored-by: Pedro Cuenca <pedro@huggingface.co>
