Fixed the broken test in DirichletAlleleDepthAndFractionIntegrationTest

[jamesemery]

No description provided.

[gatk-bot]

Github actions tests reported job failures from actions build 2734621260
Failures in the following jobs:

Test Type	JDK	Job ID	Logs
integration	11	2734621260.12	logs
integration	8	2734621260.0	logs

[codecov]

Codecov Report

Merging #7963 (6acde88) into master (f1e7265) will increase coverage by 0.001%.
The diff coverage is 100.000%.

@@               Coverage Diff               @@
##              master     #7963       +/-   ##
===============================================
+ Coverage     86.689%   86.690%   +0.001%     
- Complexity     38394     38396        +2     
===============================================
  Files           2308      2308               
  Lines         180119    180122        +3     
  Branches       19823     19823               
===============================================
+ Hits          156143    156148        +5     
+ Misses         17036     17033        -3     
- Partials        6940      6941        +1     

Impacted Files	Coverage Δ
...irichletAlleleDepthAndFractionIntegrationTest.java	100.000% <100.000%> (ø)
...itute/hellbender/tools/LocalAssemblerUnitTest.java	92.448% <0.000%> (ø)
.../hellbender/utils/python/PythonUnitTestRunner.java	78.689% <0.000%> (+3.279%)	⬆️

[cmnbroad]

LGTM. @jamesemery Any idea why the test results didn't need to change as well (I made a PR to do this a few months ago and I had to update the outputs because they had changed, but we didn't notice because they were being overwritten every time - see #7563).