PUBDEV-4485: Add fold_column and weights_column to AutoML R API (#1196)
PUBDEV-4485: Add fold_column and weights_column to AutoML R API (#1196)

* PUBDEV-4485: Added fold_column and weights_column to h2o.automl R API

* PUBDEV-4485: Fixing ignored_columns bug with fold_column and weights_column

* PUBDEV-4485: Fixing docstrings in automl.R

spennihana/h2o-3,h2oai/h2o-dev,spennihana/h2o-3,mathemage/h2o-3,michalkurka/h2o-3,spennihana/h2o-3,michalkurka/h2o-3,h2oai/h2o-dev,michalkurka/h2o-3,mathemage/h2o-3,spennihana/h2o-3,mathemage/h2o-3,h2oai/h2o-dev,h2oai/h2o-dev,h2oai/h2o-3,h2oai/h2o-3,michalkurka/h2o-3,mathemage/h2o-3,michalkurka/h2o-3,spennihana/h2o-3,h2oai/h2o-3,spennihana/h2o-3,h2oai/h2o-3,mathemage/h2o-3,mathemage/h2o-3,michalkurka/h2o-3,h2oai/h2o-3,spennihana/h2o-3,michalkurka/h2o-3,h2oai/h2o-3,mathemage/h2o-3,h2oai/h2o-dev,h2oai/h2o-3,h2oai/h2o-dev,h2oai/h2o-3,h2oai/h2o-dev