Adjust reboot for baremetal environment.
Adjust reboot for baremetal environment.

While performing overcloud reboot we need to delegate few tasks
to undercloud, which can reach overcloud nodes, and not localhost.

Change-Id: I9403b104501d392a7312aaf5570910423ab91dc4

redhat-openstack/infrared,redhat-openstack/infrared,redhat-openstack/infrared