Move the IPA-specific log collection out of the Beakerlib plugin.
Add the --logfile-dir option to tests and ipa-test-task, so that logs
can be collected even if BeakerLib is not used.
https://fedorahosted.org/freeipa/ticket/4610
Reviewed-By: Tomas Babej <tbabej@redhat.com>
The --with-xunit option ihas the same behavior as in nosetests:
it's an alias for pytest's --junitxml=nosetests.py
The --logging-level option enables direct IPA logging to stdout.
https://fedorahosted.org/freeipa/ticket/4610
Reviewed-By: Tomas Babej <tbabej@redhat.com>