Title: #132: Add "Wants=" to sssd unit
@pbrezina: what I tried to say is that sssd.service has a Wants=sssd-(a)responder.socket,
which will make the sssd-(a)responder.socket to be started as soon as sssd.service is
started ... relying then on systemd.
I'm totally open for suggestions on how to rewrite this part to make ir more clear for
See the full comment at https://github.com/SSSD/sssd/pull/132#issuecomment-413491333