Make samplesheet parser tolerable to underscores in enum names

[Donaim]

Solves #888

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (0121ba5) 86.43% compared to head (459ec49) 86.43%.

Additional details and impacted files

@@                Coverage Diff                 @@
##           samplesheetparser    #1006   +/-   ##
==================================================
  Coverage              86.43%   86.43%           
==================================================
  Files                     28       28           
  Lines                   6110     6110           
==================================================
  Hits                    5281     5281           
  Misses                   829      829           

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[donkirkby]

Looks good. Did I give you the new sample sheet that Hope created? We should confirm that this code will parse it.

[Donaim]

Did I give you the new sample sheet that Hope created?

No, I did not get one from you yet

We should confirm that this code will parse it.

For sure 👍

[Donaim]

@donkirkby This fix is independent from changes required by the new format that we got from Hope. In other words, it does not fix the issues with the new format, but that is because they are not related to the current issue (#888) that it does fix.