Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

Co-authored-by: Ntianxuanzhizi <bowen.xu@bangdao-tech.com>

* fix influx query error
* use InfluxConstants.NAME

* ArrayBlockingQueueBuffer del IF_POSSIBLE strategy

* update CHANGES.md
Co-authored-by: N李家良 <jialiang.li@tongdun.cn>

Fix DataCarrier's `org.apache.skywalking.apm.commons.datacarrier.buffer.Buffer` implementation isn't activated in `IF_POSSIBLE` mode. (#6048)

Trace method(clearScrollAsync) for elasticsearch-6.x-plugin and polishing elasticsearch-6.x-scenario. (#6031)

* Polish elasticsearch-6.x-scenario.

Add interceptors of method(analyze, searchScroll, clearScroll, searchTemplate and deleteByQuery) for elasticsearch-6.x-plugin. (#5962)

* update submodule to sync namespaced proto files

* add compat E2E test and update mock collector

* add changelog, fix GHA syntax, compat Java agent

* highlight notes, use archive dist, revert compat in agent

* polish changelog, add missing `-javaagent` in provider

* fix wrong position of JAVA_OPTS

* polish changelog

* add null conditional operators on these 3 files . To aviod some agent exception of Oracle jdbc.

* Add a line in Java Agent section of CHANGES.md file
Co-authored-by: 吴晟 Wu Sheng <wu.sheng@foxmail.com>

* add ;DB_CLOSE_DELAY=-1 to the database URL

* Update CHANGES log

* add ;DB_CLOSE_DELAY=-1 to the H2 database URL of application.yml
Co-authored-by: Nzhanglei36 <zhanglei36@asiainfo.com>

* Fix potential gRPC connection leak(not closed) for the channels among OAP instances.

* Filter OAP instances(unassigned in booting stage) of the empty IP in KubernetesCoordinator.