* Port test model compatibility. * Port logit model fix. https://github.com/dmlc/xgboost/pull/5248 https://github.com/dmlc/xgboost/pull/5281
* Port test model compatibility. * Port logit model fix. https://github.com/dmlc/xgboost/pull/5248 https://github.com/dmlc/xgboost/pull/5281