Comment 5 for bug 1588177

It was discussed with TheJulia again after she had concerns on this approach. The discussion can be found at http://eavesdrop.openstack.org/irclogs/%23openstack-ironic/%23openstack-ironic.2017-01-12.log.html and she agreed that OOB doesnt has any way to get the pxe_enabled NIC like inband can get.