EX-5011 lipe: fixup lipe.spec.in python macros

EX-5011 lipe: fixup lipe.spec.in python macros

Update the python macros in lipe.spec.in to support CentOS 8 builds of
the lipe RPMs.

Test-Parameters: trivial
Signed-off-by: John L. Hammond <jhammond@whamcloud.com>
Change-Id: Id910f00a672c4256089fe71d6a98171c1bbb3dd4
Reviewed-on: https://review.whamcloud.com/46891
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Alexandre Ioffe <aioffe@ddn.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>