systemd: allow logind to read and write /dev/event

Signed-off-by: Nicolas Iooss <nicolas.iooss_git@polytechnique.org>
udev: allow read access to module config files

Signed-off-by: Nicolas Iooss <nicolas.iooss_git@polytechnique.org>
selinuxutil: allow restorecond_t to getattr all fs

Signed-off-by: Nicolas Iooss <nicolas.iooss_git@polytechnique.org>