Update library parameter assignment in parameters.csv

[mmterpstra]

The parameter list assumes that every new run is a new library preparation. This might cause artifacts not to be removed by MarkDuplicates. My suggestion is to make this parameter less greedy or track library preparations.

old:

runPrefix   ${sequencingStartDate}_${sequencer}_${run}_${flowcell}
filePrefix  ${runPrefix}_L${lane}
library     ${filePrefix}
#parametric expansion results in:
library     ${sequencingStartDate}_${sequencer}_${run}_${flowcell}_L${lane}

new:

#better
library     ${externalSampleID}_${barcode}