Flowcell slot not correctly reported

[martenj]

Running dual Flowcells on a sequencer (e.g. NovaSeq6000, HiSeq4000), the slot will alway be set to 'A' in the Flowcell string, even for the 'B' flow cell.

e.g.:
name in DF - 201030_A00643_0126_A_HVHTLDRXX_P813

runfolder: 201030_A00643_0126_AHVHTLDRXX

and

name in DF - 201030_A00643_0127_A_HVK7MDRXX_P814

runfolder: 201030_A00643_0127_BHVK7MDRXX