The partition only needs created and given a gpt label so that a
PARTUUID will exist on the partition.
This task also makes the purge_lvm_osds scenario fail on the second
deployment after purging.
Signed-off-by: Andrew Schoen <aschoen@redhat.com>
When you udpate to the latest version of the centos/7 box it always puts
the OS on /dev/sda, so do not use it as an OSD.
Signed-off-by: Andrew Schoen <aschoen@redhat.com>