add S3 switch to cvmfs_server add-replica
add S3 switch to cvmfs_server add-replica

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