docs: def ext_pillar(minion_id,
                 pillar,  # pylint: disable=W0613
                 command):
      '''
      Execute an unmodified puppet_node_classifier and read the output as YAML
      '''
      try:
          data = salt.utils.yaml.safe_load(__salt__['cmd.run']('{0} {1}'.format(command, minion_id)))
          return data['parameters']
      except Exception:
          log.critical('YAML data from %s failed to parse', command)
          return {}