dracut: add ordering on disk-uuid.service
dracut: add ordering on disk-uuid.service

disk-uuid.service was racing with disk fscks and causing boot failures.
This was due to the GPT change triggering a udev partition re-scan
(which removes device symlinks) while the fsck was in progress.

coreos/ignition,andrejro/coreos--bootengine,yuwata/bootengine,coreos/bootengine,coreos/ignition,mjg59/bootengine,coreos/ignition