add empty bag migration rules file
add empty bag migration rules file

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