feat: add number of threads parameter

[imatiach-msft]

No description provided.

[imatiach-msft]

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[imatiach-msft]

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[codecov]

Codecov Report

Merging #1055 (8bcc639) into master (6aecdf1) will increase coverage by 0.10%.
The diff coverage is 93.75%.

❗ Current head 8bcc639 differs from pull request most recent head 514fa81. Consider uploading reports for the commit 514fa81 to get more accurate results

@@            Coverage Diff             @@
##           master    #1055      +/-   ##
==========================================
+ Coverage   84.94%   85.04%   +0.10%     
==========================================
  Files         206      206              
  Lines        9744     9751       +7     
  Branches      558      549       -9     
==========================================
+ Hits         8277     8293      +16     
+ Misses       1467     1458       -9     

Impacted Files	Coverage Δ
...soft/ml/spark/lightgbm/params/LightGBMParams.scala	90.15% <80.00%> (-0.21%)	⬇️
...com/microsoft/ml/spark/lightgbm/LightGBMBase.scala	92.85% <100.00%> (ø)
...om/microsoft/ml/spark/lightgbm/LightGBMUtils.scala	89.58% <100.00%> (ø)
...crosoft/ml/spark/lightgbm/params/TrainParams.scala	100.00% <100.00%> (ø)
.../execution/streaming/continuous/HTTPSourceV2.scala	92.80% <0.00%> (+0.71%)	⬆️
...microsoft/ml/spark/cognitive/SpeechToTextSDK.scala	90.62% <0.00%> (+0.78%)	⬆️
...a/com/microsoft/ml/spark/io/http/HTTPClients.scala	86.66% <0.00%> (+3.33%)	⬆️
...ala/org/apache/spark/ml/param/DataFrameParam.scala	86.95% <0.00%> (+17.39%)	⬆️

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[imatiach-msft]

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[imatiach-msft]

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[imatiach-msft]

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[mhamilton723]

LGTM

[imatiach-msft]

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