Re-enable BED test in IndexFeatureFile.

[cmnbroad]

Randomly noticed this test that was disabled long ago. Between samtools/htsjdk#704 and samtools/htsjdk#906, it now works.

[codecov-io]

Codecov Report

Merging #3507 into master will decrease coverage by 0.008%.
The diff coverage is n/a.

@@              Coverage Diff               @@
##              master    #3507       +/-   ##
==============================================
- Coverage     80.178%   80.17%   -0.008%     
  Complexity     17709    17709               
==============================================
  Files           1184     1184               
  Lines          64150    64150               
  Branches        9959     9959               
==============================================
- Hits           51434    51429        -5     
- Misses          8759     8762        +3     
- Partials        3957     3959        +2

Impacted Files	Coverage Δ	Complexity Δ
...oadinstitute/hellbender/utils/gcs/BucketUtils.java	74.342% <0%> (-1.974%)	38% <0%> (ø)
...er/tools/spark/sv/discovery/AlignmentInterval.java	88.983% <0%> (-1.695%)	22% <0%> (-2%)

[lbergelson]

👍