lib/models/queue.js
function() {
    var client = redis.client();
    return client.keysAsync('bull:*:id').then(function(keys) {
      return _.map(keys, function(key) {
        return key.slice(5, -3);
      });
    });
  }
function() {
    var client = redis.client();
    return client.keysAsync('bull:*:id').then(function(keys) {
      return _.map(keys, function(key) {
        return key.slice(5, -3);
      });
    });
  }
List all queues
@returns {Promise} A promise that resolves to the keys of all queues