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.
docstr: Constructs a RemoteConfig object from a JSON hostmap file.
  
  :param str filename: Name of file to load from.
code: def load(filename):
      """Constructs a RemoteConfig object from a JSON hostmap file.
  
      :param str filename: Name of file to load from.
      """
      with open(filename, "r") as f:
          hostmap = json.load(f, object_pairs_hook=OrderedDict)
      return RemoteConfig(hostmap)
  
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 2 for calling the RemoteConfig obj's underlying member method code with example usage: obj.load(filename) and returns: RemoteConfig