Byteman javadoc fails to build with jdk11.0.2 upwards

When building javadoc (for the submit subtree) the maven javadoc plugin complains about the code using modules and the target JDK (6) not supporting them. This is clearly bull as Byteman does no declare any modules. The solution is to tell maven to stop trying to be cleverer than it already isn't nor won't be neither by configuring property detectJavaApiLink to false.