* [maven-release-plugin] prepare release v8.4.0

* [maven-release-plugin] prepare for next development iteration

* [maven-release-plugin] prepare release v8.3.0

* [maven-release-plugin] prepare for next development iteration

* [maven-release-plugin] prepare release v8.2.0

* [maven-release-plugin] prepare for next development iteration

Support @KafkaPollAndInvoke annotation to replace @Trace when just using the Kafka scenario agent plugin (#5304)

* [maven-release-plugin] prepare release v8.1.0

* [maven-release-plugin] prepare for next development iteration

* [maven-release-plugin] prepare release v8.0.0

* [maven-release-plugin] prepare for next development iteration

* Remove all shardingsphere cases.

* [maven-release-plugin] prepare release v7.0.0

* [maven-release-plugin] prepare for next development iteration

* dispatcher

* getServiceInstanceTopology implementation

* CacheUpdateTimer

* fix compilation failure

* fix compilation failure

* fix esDao

* Update dao list

* dispatcher

* getServiceInstanceTopology implementation

* CacheUpdateTimer

* fix compilation failure

* fix compilation failure

* fix esDao

* Update dao list

* test e2e

* add official_analysis.oal & update getServiceInstanceTopology

* test instance topo for single service

* fix gql

* fix verifyServiceInstances

* verifyServiceInstanceTopo

* fix verifyServiceInstanceTopo

* fix ServiceInstanceInventory#name

* fix ServiceInstanceInventory#name

* e2e test

* fix action

* fix provider port

* fix Instance Node Type

* re run

* fix expected-data

* add e2e mysql

* set @test timeout

* fix ci

* increase timeout

* re check

* test ttl es7

* test ttl

* fix action

* merge group

* test ttl es7

* replace official_analysis.oal

* replace official_analysis.oal

* comments

* add TODO

* add TODO

* fix filed name

* Support Gateway without agent

* Add e2e cluster tests

e2e test setup. cc @hanahmily @peng-yongsheng @IanCao @zhaoyuguang @JaredTan95 

# e2e test case
One single standalone Spring service, accessing H2 database. This service has been installed the agent. 
OAP runs in single mode with H2 storage too.

The e2e test will verify the results through GraphQL query
1. Traces exist.
2. Service/Service Instance/Endpoint exist and have expected metrics.
3. Topology exists and match expected.

* [maven-release-plugin] prepare release v6.2.0

* [maven-release-plugin] prepare for next development iteration

* Move submodule plugin.

* Always auto-submodule

* [maven-release-plugin] prepare release v6.1.0

* [maven-release-plugin] prepare for next development iteration

* Change keys location.

* [maven-release-plugin] prepare release v6.0.0-GA

* [maven-release-plugin] prepare for next development iteration

* Lock oracle and resin plugins version.

* Move resin and oracle plugin to openskywalking

* Restore submodule active.

* Add another submodule active command.

* Remove the wrong test cases in release and fix some doc issues.

* [maven-release-plugin] prepare release v6.0.0-alpha

* [maven-release-plugin] prepare for next development iteration

* Fix some doc

* Receiver, aggregate, server finished.

* Cluster module implementation finished.

#1009

* [maven-release-plugin] prepare release apm-5.0.0-alpha

* [maven-release-plugin] prepare for next development iteration

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

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