NIO output support for multiple tools

[jean-philippe-martin]

These tools can now write bam files to Google Buckets: ClipReads, LeftAlignIndels, RevertBaseQualityScores, UnmarkDuplicates, SplitNCigarReads

[codecov-io]

Codecov Report

Merging #4695 into master will decrease coverage by 0.008%.
The diff coverage is 80%.

@@               Coverage Diff               @@
##              master     #4695       +/-   ##
===============================================
- Coverage     79.855%   79.847%   -0.008%     
+ Complexity     17337     17334        -3     
===============================================
  Files           1074      1074               
  Lines          62938     62938               
  Branches       10186     10186               
===============================================
- Hits           50259     50254        -5     
- Misses          8700      8704        +4     
- Partials        3979      3980        +1

Impacted Files	Coverage Δ	Complexity Δ
...oadinstitute/hellbender/tools/LeftAlignIndels.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...ute/hellbender/tools/walkers/UnmarkDuplicates.java	90% <100%> (ø)	5 <1> (ø)	⬇️
...org/broadinstitute/hellbender/tools/ClipReads.java	90.385% <100%> (ø)	35 <0> (ø)	⬇️
...lbender/tools/walkers/rnaseq/SplitNCigarReads.java	87.5% <100%> (ø)	34 <0> (ø)	⬇️
...lbender/tools/walkers/RevertBaseQualityScores.java	92.857% <100%> (ø)	6 <1> (ø)	⬇️
...utils/smithwaterman/SmithWatermanIntelAligner.java	50% <0%> (-30%)	1% <0%> (-2%)
...nder/utils/runtime/StreamingProcessController.java	70.37% <0%> (-0.823%)	50% <0%> (-1%)

[jean-philippe-martin]

Travis is green, this is ready for review!

[droazen]

👍 looks good

[jean-philippe-martin]

Awesome, thank you!