* 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.

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

* jedis scenario

* update doc

* fix archetypes

* fix log4j

* provide archetypes for testcase

* merge undertow scenario

* update elapsed time

* Add SkyWalking plugin test framework doc

* Remove Chinese.

* Add a description to the env variable, CASE_SERVER_IMAGE_VERSION

* Fix typo

* Change paragraph structure.