Fix #1704: correct classif.rda requirements. (#1705)
Fix #1704: correct classif.rda requirements. (#1705)

* Fix #1704: correct classif.rda requirements.

* Correct classif.rda defaults.

vinaywv/mlr,vinaywv/mlr,tijoseymathew/mlr,tijoseymathew/mlr,tijoseymathew/mlr,vinaywv/mlr