Require pylint 2.1.1-2
pylint 2.1.1-2 contains a backport of pylint's fix for RHBZ#1648299:
is_subclass_of fails with AttributeError: 'NoneType' object has no
attribute 'name'
pylint 2.1.1-2 is in @freeipa/freeipa-master COPR.
See: https://github.com/PyCQA/pylint/pull/2429
See: https://bugzilla.redhat.com/show_bug.cgi?id=1648299
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>