docs: def _http_request(url, request_timeout=None):
      '''
      PRIVATE METHOD
      Uses salt.utils.json.load to fetch the JSON results from the solr API.
  
      url : str
          a complete URL that can be passed to urllib.open
      request_timeout : int (None)
          The number of seconds before the timeout should fail. Leave blank/None
          to use the default. __opts__['solr.request_timeout']
  
      Return: dict<str,obj>::
  
           {'success':boolean, 'data':dict, 'errors':list, 'warnings':list}
      '''
      _auth(url)
      try:
  
          request_timeout = __salt__['config.option']('solr.request_timeout')
          kwargs = {} if request_timeout is None else {'timeout': request_timeout}
          data = salt.utils.json.load(_urlopen(url, **kwargs))
          return _get_return_dict(True, data, [])
      except Exception as err:
          return _get_return_dict(False, {}, ["{0} : {1}".format(url, err)])