At least make pytest on a Windows laptop work

[sverhoeven]

Uses list for args instead of parsing strings

Refs #223
Refs #200

PS C:\Users\stefanv\git\NLeSC\python-template> .\env\Scripts\pytest.exe
==================================================== test session starts ====================================================
platform win32 -- Python 3.9.4, pytest-4.6.11, py-1.10.0, pluggy-0.13.1
rootdir: C:\Users\stefanv\git\NLeSC\python-template, inifile: setup.cfg, testpaths: tests
plugins: cookies-0.5.1, cov-2.11.1
collected 6 items

tests\test_project.py ..                                                                                         [ 33%]
tests\test_values.py ....                                                                                        [100%]

============================================== 6 passed in 21.51 seconds ==============================================
PS C:\Users\stefanv\git\NLeSC\python-template>

[fdiblen]

I saw it working. Thanks! 🍡

[sverhoeven]

Thanks for reviewing