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.

2. Setting the src span type when agent register service name.
3. Revert the topology build logic.

2. Search server by application code by searchServer method.

2. loadAlarmList ok.

2. Add column named service_name_keyword into service_name elastic search table by the type of keyword.

Fix assmbly for mvn clean install -Papache-release and update version to SNAPSHOT for SNAPSHOT release.

Fixed the id auto increment bug, when there is just one record that id = -1, the expected value is 1, but actual return -1.

Application reference metric,  Application metric, Instance reference metric, Instance metric, Service reference metric, Service metric pyramid aggregate by h2 storage test successful.