[Task] Add integration test for more dubbo api

[JooKS-me]

Description

Hi community,

In integrated test of alibaba-dubbo or apache-dubbo, there is only /findById is covered. But we should test all dubbo api in examples. So we need to do the following task.

If you want to participate, please leave a message under issue.

Task List

• [x] add integrated test for DubboTestService in shenyu-examples-apache-dubbo-service
• [x] add integrated test for DubboMultiParamService in shenyu-examples-apache-dubbo-service
• [x] add integrated test for DubboTestService in shenyu-examples-alibaba-dubbo-service
• [x] add integrated test for DubboMultiParamService in shenyu-examples-alibaba-dubbo-service

The integration test is expected to add in shenyu-integration-test-alibaba-dubbo or shenyu-integration-test-apache-dubbo, and you can new a test class while doing integrated test.

[AhahaGe]

please assign these to me

[AhahaGe]

add integrated test for DubboTestService in shenyu-examples-apache-dubbo-service add integrated test for DubboTestService in shenyu-examples-alibaba-dubbo-service the other two have some problem, I am writing this