message: Fix the way we get subscribers for ErizoJS metrics
diff: @@ -648,7 +648,8 @@ exports.ErizoJSController = (erizoJSId, threadPool, ioThreadPool) => {
  metrics.connectionLevels = Array(10).fill(0);
  metrics.publishers = Object.keys(that.publishers).length;
  let subscribers = 0;
  - Object.keys(that.publishers).forEach((streamId, publisher) => {
  + Object.keys(that.publishers).forEach((streamId) => {
  + const publisher = that.publishers[streamId];
  subscribers += publisher.numSubscribers;
  });
  metrics.subscribers = subscribers;
  