docs: def list_queues(region, opts=None, user=None):
      '''
      List the queues in the selected region.
  
      region
          Region to list SQS queues for
  
      opts : None
          Any additional options to add to the command line
  
      user : None
          Run hg as a user other than what the minion runs as
  
      CLI Example:
  
          salt '*' aws_sqs.list_queues <region>
  
      '''
      out = _run_aws('list-queues', region, opts, user)
  
      ret = {
          'retcode': 0,
          'stdout': out['QueueUrls'],
      }
      return ret