Fix: integration testing problems

test/integrate/dubbo/go-client/Dockerfile

@@ -29,6 +29,7 @@ ADD . /go/src/github.com/apache/dubbo-go/test/integrate/dubbo/go-client
 
 # update dubbo-go to current commit id
 RUN test ${PR_ORIGIN_REPO} && echo "github.com/apache/dubbo-go will be replace to github.com/${PR_ORIGIN_REPO}@${PR_ORIGIN_COMMITID}" || echo 'go get github.com/apache/dubbo-go@develop'
+RUN test ${PR_ORIGIN_REPO} && echo "module github.com/apache/dubbo-go/test/integrate/dubbo/go-client" > go.mod
 RUN test ${PR_ORIGIN_REPO} && sed -n '2,$p' go.main.mod >> go.mod
 RUN test ${PR_ORIGIN_REPO} && go mod edit  -replace=github.com/apache/dubbo-go=github.com/${PR_ORIGIN_REPO}@${PR_ORIGIN_COMMITID} || go mod vendor
 

test/integrate/dubbo/go-server/Dockerfile

@@ -29,6 +29,7 @@ ADD . /go/src/github.com/apache/dubbo-go/test/integrate/dubbo/go-server
 
 # update dubbo-go to current commit id
 RUN test ${PR_ORIGIN_REPO} && echo "github.com/apache/dubbo-go will be replace to github.com/${PR_ORIGIN_REPO}@${PR_ORIGIN_COMMITID}" || echo 'go get github.com/apache/dubbo-go@develop'
+RUN test ${PR_ORIGIN_REPO} && echo "module github.com/apache/dubbo-go/test/integrate/dubbo/go-server" > go.mod
 RUN test ${PR_ORIGIN_REPO} && sed -n '2,$p' go.main.mod >> go.mod
 RUN test ${PR_ORIGIN_REPO} && go mod edit  -replace=github.com/apache/dubbo-go=github.com/${PR_ORIGIN_REPO}@${PR_ORIGIN_COMMITID} || go mod vendor