maven-plugin-it does not contribute to SonarCloud

Looking at https://sonarcloud.io/component_measures?id=opendaylight_yangtools&metric=new_lines_to_cover&selected=opendaylight_yangtools%3Aplugin%2Fyang-maven-plugin%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fyangtools%2Fyang2sources%2Fplugin%2FFileGeneratorTask.java&view=list tells a story here. Most of the codepaths are covered by it tests, but they do not contribute here for some reason.

 Investigate why sonar is ignoring these and fix the configuration/wiring accordingly.