Get rid of Sonar Source parent pom

[jensgerdes]

The Sonar PMD plugin currently uses the SonarSource parent pom. It holds a number of sane defaults that we should stick to.
Nonetheless, its usage is discouraged. It also contains a lot of settings that we do not need at all.

If we can replace the parent pom, we'll be more flexible.

[mohanaraosv]

Could you please confirm is it still relevant, what is the alternative parent pom you would suggest.

[jensgerdes]

Hi @mohanaraosv

I assume this is still relevant. It does not add a feature but sonar-pmd would get rid of all the dependencies that come with the parent pom.