Comment 2 for bug 1870529

All nodes have the same structure in instackenv.json, e.g.:
    {
      "name": "lab-controller-0",
      "pm_type": "idrac",
      "pm_addr": "192.168.100.101",
      "pm_user": "root",
      "pm_password": "secret",
      "capabilities": "node:controller-0,profile:control,boot_mode:uefi,boot_option:local"
    },

They're being imported with:
openstack overcloud node import instackenv.json
openstack overcloud node introspect --all-manageable
openstack overcloud node provide --all-manageable