synctest.mplx

variants:
    - synctest:
        sync_tarball = synctest.tar.bz2
        sync_length_type = int
        sync_loop_type = int
        variants:
            - loop_short:
                sync_loop = 10
            - loop_medium:
                sync_loop = 50
            - loop_long:
                sync_loop = 100
        variants:
            - length_short:
                sync_length = 100
            - length_medium:
                sync_length = 500
            - length_long:
                sync_length = 1000