pylint: Adapt to new Pylint 2.8
- globally ignore `consider-using-with`
- fix `consider-using-max-builtin`
- explicitly enable pylint on project configuration
- unpin Pylint
- added transformation for IntegrationTest attributes(will work
unless explicitly defined)
Fixes: https://pagure.io/freeipa/issue/8818
Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Christian Heimes <cheimes@redhat.com>