Rule md5sum

[WolkeWS]

Breaks on testing due to subsampling being false but getting checked for true instead

[WolkeWS]

Was a systems issue with osx using md5 instead of md5sum (and the function passing because it skipped over that part)

[WolkeWS]

This should work for osx:

    """
    echo -e "{params.r1_checksum}  {input.r1_file}\n{params.r2_checksum}  {input.r2_file}" > {output.checksums}
    find {params.check_files}*.fastq.gz -type f | xargs openssl md5 | sed -e 's/^MD5(\(.*\))= \(.*\)/\\2  \\1/' > check.txt
    diff check.txt {output.checksums}
    ( [ "{params.subsampled}" = "True" ] && touch {output.validated}) || cp {output.checksums} {output.validated}
    """