add rocketmq gray plugin workflow test #640

Job	Run time
set-execution-conditions	7s
build agent and cache	37s
download midwares and cache	8s
Test for tag transmission httpclientv3	1s
Test for tag transmission httpclientv4	1s
Test for tag transmission okhttp	1s
Test for tag transmission grpc	1s
Test for tag transmission servicecomb	1s
Test for tag transmission sofarpc	1s
Test for tag transmission alibabadubbo	1s
Test for tag transmission apachedubbo	1s
Test for tag transmission config	1s
Test for tag transmission kafka	1s
Test for tag transmission crossthread	1s
Test for tag transmission rocketmq	1s
Test for tag transmission jdkhttp and jetty	1s
Test for tag transmission jdkhttp and tomcat	1s
	1m 6s

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