Don't configure JaCoCo if there are no test cases. This should also solve an issue occurring with recent versions of the Surefire plugin in conjunction with certain versions of Maven (e.g. 3.0.4) where the build fails because of a missing attached artifact.


git-svn-id: https://svn.apache.org/repos/asf/webservices/axiom/trunk@1523467 13f79535-47bb-0310-9956-ffa450edef68