tox: Allow running with custom pytest options with {posargs}

Tox allows passing custom command arguments with {posargs}. This is
useful to us because we have our own custom pytest option
'--regenerate-output' which we need to be able to pass to pytest.
The way this works is you run tox as:
    $ tox -- <--custom_option>

and tox will substiture <--custom_option> everywhere where {posargs} is
mentioned. That would be a problem if we ever allow running multiple
tox environments with custom options, but in that case limiting the
environments to be run like the following would again solve the issue:

    $ tox -e lint -- --color never
    $ tox -e py38 -- --regenerate-output

Signed-off-by: Erik Skultety <eskultet@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index cff5ee5..c879b8c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,7 +12,7 @@ deps = pytest
        ansible
        ansible-runner
        -rrequirements.txt
-commands = pytest
+commands = pytest {posargs}
 
 [testenv:lint]
 description = Run linter