E2E verify OAP cluster model data aggregation and fix `SelfRemoteClient` self observing metrics. (#8481)

* E2E: verify OAP cluster model data aggregation.
* Fix `SelfRemoteClient` self observing metrics.
* Remove unnecessary storage cases in the cluster e2e.
* Add steps in cluster e2e to verify the whole cluster is up
* update the doc

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

* Follow protocol grammar fix `GCPhrase -> GCPhase`

* Fix doc.

Support Apache IoTDB as a storage option, mostly refer to previous InfluxDB storage option.
* The Design of Apache IoTDB Storage Option, https://skywalking.apache.org/blog/2021-11-23-design-of-iotdb-storage-option/

Co-authored-by: Nyuzhongyu <yuzhongyu@cestc.cn>

Add a GraphQL query to get OAP version, display OAP version in startup message and error logs (#8004)

* Replace e2e cases to e2e-v2: Kafka: Base, Meter, Log, Profile
* Set `SW_KAFKA_FETCHER_ENABLE_NATIVE_PROTO_LOG`, `SW_KAFKA_FETCHER_ENABLE_NATIVE_JSON_LOG` default `true`.

* Support `!= null` in OAL engine.
* Add `Message Queue Consuming Count` metric for MQ consuming service and endpoint.
* Add `Message Queue Avg Consuming Latency` metric for MQ consuming service and endpoint.
* Document with a new menu in the `tracing` catalog is added

* Add more comments in the core module, should help the source code readers a lot.

Motivation:

Review code styles with some bots automatically.

Modifications:

Set up ReviewDog in GitHub Action to review code style.

Add more check rules to checkstyle plugin.

Result:

Obvious code styles can be reviewed and commented automatically.

* [Feature] Officially support ElasticSearch 7 as backend storage

* Extract bootstrap module to be shared by multiple starters

* Add missing configuration file and distinguish different version in test

* Update known-oap-backend-dependencies-es7.txt

Update the dependency lib

* Fix missing adaptation to ElasticSearch 7

* Rename ElasticSearch 7 specific class with Es7 infix

* Fix miss-adapted ElasticSearch DAO API

* Add ES7 specific configuration and polish documentations

* Polish documentations

* Polish documentations

* plugin code

* NPE FIX

* Add componentId for apache servicecomb.

* Edit according to comment

* add servicecomb

* Edit according to comment

* fix

* Add elasticsearch 6.x plugin & elasticsearch 6.x test scenario

* fix elasticsearch query data window size too large error.

* make query max window size configurable.

* add plugin netty-socketio https://github.com/mrniko/netty-socketio

* delete create exit span interceptor.

* delete create exit span interceptor testcase.

* delete create exit span interceptor testcase.

* add constructor test unit

* change bind on random port in test case

* reverse upstream master whitespace

* resolve build_id param

* delete health check segment test case

* add ContextManager.isActive check before use activeSpan invoke

* remove unnecessary code and blank line

* Is it a typo or not?

* delete datasource-settings.properties

* handle 'metadataQueryMaxSize'

* delete DynamicModuleConfig.java

* modify mysql config

* parsing yaml to support the configuration for multiple properties

* delete datasource-settings.properties

* modify doc

* add properties for docker-entrypoint.sh

* add testLoadConfig()