This reverts commit 583e744578.
Reason for revert: Systems with multiple hosts are failing to unlock controller-1 and the computes with those servers halting with an emergency mode prompt. Suspicion is the newer version of systemd has changed behaviour in udev and disk dependencies. It seems to have caused a previous infrequent issue with emergency mode to occur much more frequently. To enable install and sanities to pass we have to revert this commit until the emergency mode issue is fixed first.
Change-Id: I5235843a3d44c93df472313c0166f5918787a761