Make published configurations configurable in VersionsPropsPlugin

[henryptung]

The list of published configurations should be configurable, to allow for more flexible
publish setups. As an example, the Gradle Shadow plugin adds the shadowRuntimeElements configuration to the java component for
publishing, but since this isn't addressed by the fixed published-configuration list, it leaks the broken root-project
dependency into the published POM.

Additional note: nebula-publishing-plugin v17+ uses native Javadoc and sources-jar support from Gradle.
These, however, produce additional publishing elements configurations named javadocElements
and sourcesElements, which are not properly handled by the existing list. If that list were configurable, this could be easily worked-around in-repo.