[SSSD] [sssd PR#920][comment] Add comment to workaround for libsemanage issue

[centos-ci]

URL: https://github.com/SSSD/sssd/pull/920
Title: #920: Add comment to workaround for libsemanage issue

centos-ci commented:
"""
Can one of the admins verify this patch?
"""

See the full comment at https://github.com/SSSD/sssd/pull/920#issuecomment-547847931