Fix LeftAlignAndTrimVariants args.

[cmnbroad]

Fix for #5511, intermittent LeftAlignAndTrimVariants unit tests failures.

[codecov-io]

Codecov Report

Merging #5519 into master will increase coverage by 0.035%.
The diff coverage is 100%.

@@              Coverage Diff               @@
##             master     #5519       +/-   ##
==============================================
+ Coverage     87.07%   87.105%   +0.035%     
- Complexity    31318     31481      +163     
==============================================
  Files          1921      1921               
  Lines        144566    145124      +558     
  Branches      15950     16048       +98     
==============================================
+ Hits         125874    126410      +536     
- Misses        12900     12922       +22     
  Partials       5792      5792

Impacted Files	Coverage Δ	Complexity Δ
...variantutils/LeftAlignAndTrimVariantsUnitTest.java	100% <100%> (ø)	21 <0> (ø)	⬇️
...walkers/variantutils/LeftAlignAndTrimVariants.java	93.197% <100%> (ø)	39 <0> (-1)	⬇️
...r/tools/walkers/mutect/Mutect2IntegrationTest.java	94.466% <0%> (-0.016%)	75% <0%> (+3%)
.../tools/walkers/annotator/ReadPositionUnitTest.java	100% <0%> (ø)	5% <0%> (ø)	⬇️
...ls/walkers/mutect/M2FiltersArgumentCollection.java	100% <0%> (ø)	2% <0%> (+1%)	⬆️
...oadinstitute/hellbender/utils/gcs/BucketUtils.java	81.098% <0%> (+0.61%)	42% <0%> (ø)	⬇️
...der/tools/walkers/mutect/M2ArgumentCollection.java	89.13% <0%> (+1.63%)	14% <0%> (+5%)	⬆️
...er/tools/funcotator/FuncotatorIntegrationTest.java	85.971% <0%> (+1.669%)	180% <0%> (+69%)	⬆️
...itute/hellbender/tools/walkers/mutect/Mutect2.java	84% <0%> (+1.778%)	27% <0%> (+3%)	⬆️
...tools/walkers/haplotypecaller/graphs/SeqGraph.java	89.412% <0%> (+2.353%)	24% <0%> (+1%)	⬆️
... and 7 more

[jamesemery]

👍 This looks innocuous, though I am not sure I understand how this fixed the problem exactly.