pytest driver

[edhinard]

Here is proposition for a pytest driver

The 'pytest driver' can be used on every test set written for pytest.
Given a pytest package that is launched with the command: pytest --opt1 arg1 --opt2 testdir, it can be executed by xtesting with the following testcase.yaml:

run:
  name: pytest
    args:
      dir: testdir
      options:
        opt1: arg1
        opt2: null

options can be written as a list of strings ['--opt1', 'arg1', '--opt2']