Add option/flag to provide full output in pytest

[Tobias Kunze]

At least for my setup, pytest doesn't show the full diff even with -vvv flags, so adding an option to log to stdout even with pytest would be appreciated.

[Adam Johnson]

What versions of django, pytest, and pytest-django are you on? Maybe something changed...

[Tobias Kunze]

django==2.2.1
pytest==4.4.1
pytest-django==3.4.8

says pip freeze.