Call setClusterMetadata to pass trial

def set_remote_config(experiment_config, port, config_file_name):
    '''Call setClusterMetadata to pass trial'''
    #set machine_list
    request_data = dict()
    request_data['machine_list'] = experiment_config['machineList']
    if request_data['machine_list']:
        for i in range(len(request_data['machine_list'])):
            if isinstance(request_data['machine_list'][i].get('gpuIndices'), int):
                request_data['machine_list'][i]['gpuIndices'] = str(request_data['machine_list'][i].get('gpuIndices'))
    response = rest_put(cluster_metadata_url(port), json.dumps(request_data), REST_TIME_OUT)
    err_message = ''
    if not response or not check_response(response):
        if response is not None:
            err_message = response.text
            _, stderr_full_path = get_log_path(config_file_name)
            with open(stderr_full_path, 'a+') as fout:
                fout.write(json.dumps(json.loads(err_message), indent=4, sort_keys=True, separators=(',', ':')))
        return False, err_message
    result, message = setNNIManagerIp(experiment_config, port, config_file_name)
    if not result:
        return result, message
    #set trial_config
    return set_trial_config(experiment_config, port, config_file_name), err_message