split MNPs in M2 pon WDL

[davidbenjamin]

@takutosato This fixes a potential bug.

[codecov-io]

Codecov Report

Merging #5706 into master will increase coverage by 0.005%.
The diff coverage is n/a.

@@              Coverage Diff               @@
##              master    #5706       +/-   ##
==============================================
+ Coverage     87.066%   87.07%   +0.005%     
- Complexity     31853    31875       +22     
==============================================
  Files           1940     1940               
  Lines         146679   146738       +59     
  Branches       16218    16226        +8     
==============================================
+ Hits          127707   127765       +58     
  Misses         13060    13060               
- Partials        5912     5913        +1

Impacted Files	Coverage Δ	Complexity Δ
...ypecaller/AssemblyBasedCallerGenotypingEngine.java	89.912% <0%> (-1.316%)	90% <0%> (-1%)
...lotypecaller/readthreading/ReadThreadingGraph.java	88.725% <0%> (+0.118%)	159% <0%> (+15%)	⬆️
...r/tools/walkers/mutect/Mutect2IntegrationTest.java	91.993% <0%> (+0.184%)	92% <0%> (+2%)	⬆️
...ller/readthreading/ReadThreadingGraphUnitTest.java	95.484% <0%> (+0.246%)	59% <0%> (+4%)	⬆️
...ller/ReadThreadingAssemblerArgumentCollection.java	94.444% <0%> (+0.327%)	1% <0%> (ø)	⬇️
...pecaller/readthreading/ReadThreadingAssembler.java	68.077% <0%> (+0.499%)	52% <0%> (+1%)	⬆️
...oadinstitute/hellbender/utils/pairhmm/PairHMM.java	78.417% <0%> (+0.56%)	24% <0%> (ø)	⬇️
...der/tools/walkers/mutect/M2ArgumentCollection.java	89.474% <0%> (+0.585%)	14% <0%> (ø)	⬇️
...allerReadThreadingAssemblerArgumentCollection.java	71.429% <0%> (+2.198%)	3% <0%> (ø)	⬇️
...utectReadThreadingAssemblerArgumentCollection.java	70% <0%> (+3.333%)	2% <0%> (ø)	⬇️
... and 1 more

[takutosato]

comman dline

[takutosato]

One typo but looks good!