[SSSD] [sssd PR#978][opened] Fix another build failure with python 3.8

[panlinux]

URL: https://github.com/SSSD/sssd/pull/978
Author: panlinux
 Title: #978: Fix another build failure with python 3.8
Action: opened

PR body:
"""
The parsing of python3-config --ldflags would break if multiple -L
path components were present. This change loops over these paths
until it finds the correct one.

Fixes https://pagure.io/SSSD/sssd/issue/4147
"""

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/978/head:pr978
git checkout pr978