1. Use peer id in entry span to find the instance id and application id.
2. Make the instance id and application id to be the front instance id and front application id of the reference metric.
3. Do not create the application mapping metric.

Use listener factory to create new instance when create SegmentParser instance. Because of the listener is stateful.

Make agent gRPC to be a collector module.
Make agent jetty to be a collector module.
Make agent stream to be a collector module.

1. Success: send to analytic worker
2. Failure: write into file.

#423

#373

Delete service and node reference entity, rename service and node reference sum entity to reference.