Modified test_scripts_labkey_to_snakemake_table

Modified test_scripts_labkey_to_snakemake_table to account for the modified samples.tsv
which now contains fq1_polya_3p, fq1_polya_5p, fq2_polya_3p, fq2_polya_5p instead of just
fq1_polya and fq2_polya.

tests/test_scripts_labkey_to_snakemake_table/expected_output.md5

 b163e7b06bd9e0a71f2fd1fc4935fea9  config.yaml
-cb58e046242c2702038e6e21dbd0bdb4  samples.tsv
+071f0e942321df5e38c8b2d458f7be06  samples.tsv