Hash Transform API that takes in advanced options.

[codemzs]

fixes #4422

Needed by a 1P customer.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@9fc8f1c). Click here to learn what that means.
The diff coverage is 91.66%.

@@            Coverage Diff            @@
##             master    #4443   +/-   ##
=========================================
  Coverage          ?   74.71%           
=========================================
  Files             ?      906           
  Lines             ?   159289           
  Branches          ?    17145           
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  Hits              ?   119011           
  Misses            ?    35476           
  Partials          ?     4802

Flag	Coverage Δ
#Debug	74.71% <91.66%> (?)
#production	70.07% <82.35%> (?)
#test	90.11% <100%> (?)

Impacted Files	Coverage Δ
test/Microsoft.ML.Tests/Transformers/HashTests.cs	100% <100%> (ø)
...icrosoft.ML.TestFramework/DataPipe/TestDataPipe.cs	91.27% <100%> (ø)
src/Microsoft.ML.Transforms/OneHotHashEncoding.cs	84.92% <100%> (ø)
...ML.Data/Transforms/ConversionsExtensionsCatalog.cs	70.87% <100%> (ø)
...soft.ML.Data/DataLoadSave/DataOperationsCatalog.cs	78.45% <100%> (ø)
...L.Transforms/Text/WordHashBagProducingTransform.cs	61.08% <50%> (ø)
src/Microsoft.ML.Data/Transforms/Hashing.cs	92.34% <81.81%> (ø)

[eerhardt]

Do you want to add a new functional test that uses the new advanced options? That way we ensure the actual API works as users will use it. #Resolved

[eerhardt]

I think this new API looks good to me. It should be ready to go in when we have functional tests covering the new API.

[codemzs]

@eerhardt I have added the functional test you asked for (even though I had a unit-test called HashWorkout that exercised this routine). Since the API looks good to you and is ready to go so I will check-in this PR (because I need to provide the nuget today) but if you have more comments please make here and I will include them in a separate PR.