[Meta-ticket]: Add pytest.ini to all packages which use pytest #951
Description
In the current state, if you run any of the pytest tests locally, you get warning messages like:
/home/ubuntu/.local/lib/python3.8/site-packages/_pytest/junitxml.py:417
/home/ubuntu/.local/lib/python3.8/site-packages/_pytest/junitxml.py:417: PytestDeprecationWarning: The 'junit_family' default value will change to 'xunit2' in pytest 6.0.
Add 'junit_family=xunit1' to your pytest.ini file to keep the current format in future versions of pytest and silence this warning.
_issue_warning_captured(deprecated.JUNIT_XML_DEFAULT_FAMILY, config.hook, 2)
We currently workaround this in CI by always adding a pytest.ini before starting tests (see ros2/ci#471), but it would be nice to get rid of that and just have local and CI work the same.
This is a tracking bug for all of the places we need to change it. Once I've opened the relevant PRs, I'll run one CI job for all of them here.