* Update: add LICENSE-material-design

* Immigrate tests okhttp scenario

* Fix Header.

* Fix license Header.

* Modify code follow the reivew suggestions.

* Fix expected.xml

* Restore the missed config

* Update okhttp elapsed time.

* Update total time for Group1.

* Fix the missed operationNames.

Fix the wrong trigger option.

* Add ext lib and ext config

* Add container checker

* [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

Add java agent deployment document for skywalking with jetty

* Sort the segment fragments

* Add comment.

* Remove unnecessary box codes.

* Make istio/envoy ci test (#3697)

* for #3669

* Add Apache 2.0 header

* Fixed some irrational

* [WIP]Scripts which deploy Istio + OAP + ES to a standard k8s cluster (#3718)

* for #3669

* Add Apache 2.0 header

* Fixed some irrational

* create istio-deploy.sh

* modify notes

* istio version and namespace to parameterize

* Keep template files and tested successfully

* add sw istio adapter

* add a new key for isito adapter

* notes.txt

* add mixer template

* add sw deploy script

* bookinfo and cleanup scripts

* add timeout and set -e

* modify cleanup and request timeout of demo

* End blank line

* Add minikube to CI (#3836)

* Test

* Add github action files

* Add tunnel to provie loadbalancer

* upload logs

* Fixed some nits

* Print systeminfo on failure

* fix project name

* docker-compose add network

* docker-compose add network

* revert interval

* [test/plugin] immigrate test hystrix scenario.

* change package name.

* add start script.

* plugin code

* NPE FIX

* Add reference to module architecture diagrams

* Changed order of the links according to PR comment

* Add componentId for apache servicecomb.

* Edit according to comment

* add servicecomb

* Edit according to comment

* fix

* set no statement.

* update sql.

* update statement.

* revert threshold.

* Update powered-by.md

17173 Use skywalking for APM, problem tracking and troubleshooting

* Update powered-by.md

Change order.

* Update powered-by.md

update powered-by.md

* Update powered-by.md

Change order

* Update powered-by.md

* add fdd

* Update powered-by.md

Change order.

* Update joda lib to fix UTC 13/14 bug

* Change the dependencies file.

* grpc scenario

* update support-version.list

Add repo description control file

* Intercept feign RequestTemplate resolve args method ,get the url without parameters

* fix ci warnings

* optimize import

* fix: miss  path in feign target url like "http://localhost:8080/feign-scenario"
     fix feign-scenario test use pathVariable

* Add testcase to DefaultHttpClientInterceptorTest

* Clean ThreadLocal

* User one ThreadLocal replace two. User try/final  remove ThreadLocal .

* Code Optimize

* [test/plugin] add elasticsearch 7.x plugin test scenario.

* refresh index, make can search.

* remove unused package.

* update supported framework document.

* fix service name repeat.

* Refactor DataCarrier, support ArrayBlockingQueueBuffer as the implementation for blocking queue buffer.

* Fix style issue.

* Remove import.

* Remove uesless codes.

* Rabbitmq plugin e2e test migration

* 3753-code review fixes

* 3753-test-case-improvements

* Update pom.xml

Remove the repo addresses.

* Update Plugin-test.md

* immigrate test feign scenario.

* add license.

* update use test skeleton.

* delete repeat spring-boot starter dependence.

* add support-list version.

* make socketio-plugin testcase stable