Re-enable fail on warnings on the maven-dependency-plugin

In order to make the "road to quarkus" fork/development branch compiling the JAR I decided to disable the <failOnWarning> option for the maven-dependency-plugin because it was failing due to multiple unused dependencies or used but not declared ones. This is due to the addition of the Quarkus bom and not removing the dependencies not used anymore.

We have to fix this, by removing the not used dependencies and ignoring the others and finally re-enabling the <failOnWarning>.