This is a workaround to allow installation to a single path of a
multipath in the event that multipathd loses the race to claim
the member disks during system startup. This patch does nothing
to make the resulting system use multipath, so it is on the user
to manually reconfigure their system after installation.
I don't really want this on master since this should be fixed
outside of blivet/anaconda. If anyone disagrees, let me know.