[SPARK-8971][ML] Add stratified sampling to ML CrossValidator and TrainValidationSplit - #14321

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Commits on Jul 20, 2016

Adding stratified sampling to cross validation and train validation split in ml/tuning
sethah
committed
a058cd8

Commits on Jul 22, 2016

Adding some tests and style fixes
sethah
committed
5f244d1
Refactor for efficiency when computing multiple waitlists.
sethah
committed
67f6002
Move some logic back into SSUtils
sethah
committed
37be0b5