class_docstr: Configure TF Encrypted to use network hosts for the different players.
  
  :param (str,str),str->str hostmap: A mapping of hostnames to
      their IP / domain.
  :param str job_name: The name of the job.
code: def hostmap(self):
      return OrderedDict(
          (player.name, player.host)
          for player in self._players.values()
      )
  
imports: import json
  import logging
  import math
  from abc import ABC
  from abc import abstractmethod
  from collections import OrderedDict
  from pathlib import Path
  import tensorflow
  from .player import Player
label_desc: Use image node_id 4 for calling the RemoteConfig obj's underlying member method code with example usage: obj.hostmap() and returns: OrderedDict