* BareMetal Operator uses network_data.json to specify network
configuration. Cloud-init should also use this format for
ephemeral node to reduce document model data duplication
* Since ephemeral node is ISO image it can be used as Data Source for
cloud-init. Therefore "config-2" label is used for LiveCD image
Change-Id: I972633dfaa521bc99987b838a7d83042527a399e