Define pytest_plugins at the root to support pytest 4.0
Defining 'pytest_plugins' in a non-top-level conftest is no longer supported: It affects the entire test suite instead of just below the conftest as expected. /home/dev/swh-environment/swh-web/swh/web/tests/conftest.py Please move it to a top level conftest file at the rootdir: /home/dev/swh-environment/swh-web For more information, visit: https://docs.pytest.org/en/stable/deprecations.html#pytest-plugins-in-non-top-level-conftest-files