I reverted to back before Luya's errant merge.
Matthew removed the cloud big data spin after the errant merge, but I
think that was only necessary because of the errant merge. It is gone
Matthew's other commit (dd extlinux mbr during post as temporary workaround
for bug #1147998) is not applying cleanly and needs to be looked at.
Luya needs to correctly do whatever he was trying to do originally.
In theory we are in a freeze now, so these changes should only be done now
if they are needed for freeze exception or blocker for beta. Otherwise
wait until after beta is gold.