fix unit test by excluding a conflicting dependency, also bump up version of easymock
fix unit test by excluding a conflicting dependency,
also bump up version of easymock

arcivanov/cobertura-plugin,stxKris/cobertura-plugin,maninder-singh/cobertura-plugin,jenkinsci/cobertura-plugin,rbaradari/cobertura-plugin,chandu-atina/cobertura-plugin