pythia8: added old versions, build depend on rsync (#14740)
pythia8: added old versions, build depend on rsync (#14740)


LLNL/spack,LLNL/spack,LLNL/spack,LLNL/spack,iulian787/spack,iulian787/spack,LLNL/spack,iulian787/spack,iulian787/spack,iulian787/spack