{"parameter_defaults": {"HostnameMap": {"overcloud-controller-0": "np0000073843", "overcloud-controller-1": "np0000073844", "overcloud-controller-2": "np0000073845", "overcloud-novacompute-0": "np0000073846", "overcloud-novacompute-1": "np0000073847", "overcloud-novacompute-2": "np0000073848"}}}