[RFE] unit test code coverage visible on Codecov.io

[tisnik]

Unit test code coverage should visible on Codecov.io. We have the job to run unit tests, so it needs to be modified to publish results on Codecov.io.

[r0x0d]

We used to use codecov.io on https://github.com/oamg/convert2rhel, and there we had a problem that at some point, codecov started to ask us to authenticate with a token to keep publishing results there.

If I'm not wrong, submitting results without token only allowed you to push a couple of requests. That was a major problem because we were working on a fork-based strategy in that repo, which means that we couldn't expose the token in GitHub actions for forks (at least, not without making the pipeline unsecure)

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With that said, probably things have changed from that time to now, but in any case, it is good to investigate if that is still happening.

[andywaltlova]

I wanted to take the issue, but it is indeed true, token is required for protected branches (according to this https://docs.codecov.com/docs/codecov-tokens ) and since https://github.com/road-core/service/blob/main/CONTRIBUTING.md#tldr suggests to use fork most probably condition is needed, I did try it in #69 but since I don't have access I need approval to run the workflows and see if it works (not really great for testing). I can leave the issue to someone else to finish if I can't have the access :)