Reenable code coverage tab

[gracewilcox]

Hi @gravufo! I also couldn't find good docs or examples online for this scenario. Our pipelines require the Cobertura xml format, so
I found this doc, which mentioned using gocover-cobertura. (I played around with it but didn't get it fully functional.)

Anyway, we just decided to remove the step. It did generate a pretty code coverage tab in our Azure pipelines dashboard, but it's not necessary. (Our actual code coverage check can use the native coverage tool in Go.)

We might try to add the code coverage tab back in at a later date, but it's not a priority right now.

Originally posted by @gracewilcox in #25217

[gracewilcox]

We removed the code coverage tab when we removed the gocov dependency. Update the pipeline to get the coverage tab working again.

Old coverage tab:

Current:

[gravufo]

To help you, I made it work using the following (Dockerfile syntax):

RUN go install github.com/jstemmer/go-junit-report/v2@latest && \
    go install github.com/quantumcycle/go-ignore-cov@latest && \
    go install github.com/boumenot/gocover-cobertura@latest

RUN mkdir /testresults && \
    go test -v -coverprofile=/testresults/coverage.txt -covermode count $(go list ./...) 2>&1 | go-junit-report > /testresults/report.xml && \
    go-ignore-cov --file /testresults/coverage.txt -v && \
    gocover-cobertura -by-files -ignore-gen-files < /testresults/coverage.txt > /testresults/coverage.xml