Jenkinsfile: run each py.test on a separate executor Running all py.test processes in parallel on the same executor is not a good idea. If a node has not much RAM, it could run out of memory when all py.test processes run at the same time. And If there are only 2 CPU cores, it doesn't make sense to run more then 2 processes either. Therefore use a separate executor for each one. The py.test processes will thus only run in parallel if there are multiple Jenkins executors available.

[pytest]
# only look for tests in kallithea/tests
python_files = kallithea/tests/**/test_*.py
addopts =
    # --verbose
    # show extra test summary info as specified by chars (f)ailed, (E)error, (s)skipped, (x)failed, (X)passed, (w)warnings.
    -rfEsxXw
    # Shorter scrollbacks; less stuff to scroll through
    --tb=short