grub-mkconfig runs a lvs command that attempts to access /run/lvm
once for each block device, currently it times out after 10 seconds
for each device and moves on. Multiple 10 second delays become
a problem (causing IPA API timeouts) when multiple block devices
are present. Bind mounting in /run avoids the delay and the
timeouts.
Task: 30616
Story: 2005507
Change-Id: Iae8b7808a35bff121f64971aadd4bd36b5f5bb71