exclude storm's external libraries from storm-mesos release tarball
exclude storm's external libraries from storm-mesos release tarball

changreytang/storm-mesos,mesos/storm,erikdw/storm-mesos,erikdw/storm-mesos,mesos/storm,changreytang/storm-mesos,mesos/storm,changreytang/storm-mesos,erikdw/storm-mesos