add 64E S2.1 XML config file to velodyne_pointcloud tests directory
add 64E S2.1 XML config file to velodyne_pointcloud tests directory

jpgr87/velodyne,jpgr87/velodyne,lemiant/velodyne,vrabaud/velodyne,wenjiebit/velodyne,niosus/velodyne,lemiant/velodyne,niosus/velodyne,lemiant/velodyne,niosus/velodyne,vrabaud/velodyne,jpgr87/velodyne,pierriko/velodyne,wenjiebit/velodyne,pierriko/velodyne,davidlandry93/velodyne,davidlandry93/velodyne,vrabaud/velodyne,davidlandry93/velodyne,pierriko/velodyne,wenjiebit/velodyne