TEST: add helper to upload into backend
TEST: add helper to upload into backend

djw8605/cvmfs,djw8605/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,DrDaveD/cvmfs,reneme/cvmfs,alhowaidi/cvmfsNDN,djw8605/cvmfs,DrDaveD/cvmfs,Gangbiao/cvmfs,Moliholy/cvmfs,reneme/cvmfs,cvmfs/cvmfs,reneme/cvmfs,cvmfs/cvmfs,Gangbiao/cvmfs,trshaffer/cvmfs,trshaffer/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,cvmfs/cvmfs,trshaffer/cvmfs,trshaffer/cvmfs,reneme/cvmfs,alhowaidi/cvmfsNDN,alhowaidi/cvmfsNDN,Gangbiao/cvmfs,Gangbiao/cvmfs,cvmfs/cvmfs,Moliholy/cvmfs,DrDaveD/cvmfs,DrDaveD/cvmfs,trshaffer/cvmfs,alhowaidi/cvmfsNDN,cvmfs/cvmfs,DrDaveD/cvmfs,reneme/cvmfs,djw8605/cvmfs,Moliholy/cvmfs,alhowaidi/cvmfsNDN,Moliholy/cvmfs,djw8605/cvmfs,Moliholy/cvmfs,Gangbiao/cvmfs