Use xerces.version parameter while defining xerces as plugin dependency
SM-2399: Upgrade to Apache POM 15
SM-2398: Upgrade maven plugins
SM-2400: Upgrade to Felix maven-bundle-plugin 2.5.3
SM-2403: Upgrade to maven-surefire-plugin 2.18
SM-2402: Use correct cxf.codegen-plugin version
SM-2392: Upgrade to Pax Exam 4.3.0