packaging: setup: fix older pep8 compatibility

regardless, this is better...

Change-Id: Ibd6b2cf7c1c9f5427a6cce6ceb8df2873bc43888
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>
(cherry picked from commit 19a2ed147aff0cde12f2ad144617e7c7240ab0da)