PUBDEV-1176 Pretty-print validation metrics CM for multinomial GBM/DL models. Additionally, suppress default outputs.
PUBDEV-1176 Pretty-print validation metrics CM for multinomial GBM/DL models.
Additionally, suppress default outputs.

h2oai/h2o-flow,junwucs/h2o-flow,printedheart/h2o-flow,h2oai/h2o-flow,junwucs/h2o-flow,nilbody/h2o-flow,nilbody/h2o-flow,junwucs/h2o-flow,nilbody/h2o-flow,printedheart/h2o-flow,printedheart/h2o-flow