Ensures nodes are shutoff if a baremetal deployment, before attempting
to deploy. Previous behavior is deploy will run up to Foreman pxeboot,
then fail. We can save a lot of time by detecting this up front. Nodes
must be shutoff before deploying.
JIRA: BGS-68
Change-Id: Ie585e12a5271bc1baac60f6256f85e5cb1b1baeb
Signed-off-by: Tim Rozet <trozet@redhat.com>