When having sriov configured in mlnx interfaces and we are using MLNX
ofed, it will install openibd and in reboot case we'll have a race between
sriov_config service and that openibd service which loads mlx drivers,
sometimes it causes failures in starting sriov_config service.
So updating sriov_config service to run after openibd service if it's
present, if not as in default case, systemd ignores it.
(cherry picked from commit