Adds an ansible plug-in that can process the input
in THT parameter 'NetConfigDataLookup' used for the
OsNetConfigMappings resource in tripleo-heat-templates.
Add tasks in the tripleo_network_config role to call the
plug-in and write the result into the default mapping
file for os-net-config.
Change-Id: I968771376cdb3cd2e8e576a4de226b1eccebb23a
Blueprint: bp/nova-less-deploy