pycodestyle: Check *.in Python files
Many of IPA Python scripts are shebang configurable scripts and
have special suffix '.in' for that. Pycodestyle by default check
only '*.py' files [0].
[0]: https://pycodestyle.pycqa.org/en/latest/intro.html
Fixes: https://pagure.io/freeipa/issue/8961
Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>
Reviewed-By: François Cami <fcami@redhat.com>