The standalone baremetal cli was introduced in Ussuri as a direct
replacement for "openstack baremetal" commands, which have since been
removed from openstackclient.
This change updates all "openstack baremetal" calls to "baremetal"
calls without regard for the overall correctness of the documentation,
but at least it is calling a command which actually exists.
Change-Id: I85fa3a5dddc5e0815a9650019504336e7feccf81
440117ffcd