Use newer publishCoverage for jenkins code coverage (#446)
Use newer publishCoverage for jenkins code coverage (#446)

- dmake now depends on `code-coverage-api` Jenkins plugin
- calculate diff for PRs
- for now: just one merged report; could be rendered configurable from dmake.yml
- for now: keep the old coberturaPublisher
Deepomatic/dmake,Deepomatic/dmake,Deepomatic/dmake,Deepomatic/dmake