python `model.actual_params` does not work if only training data were provided

Description

When I created a model from python client and tried to access `model.actual_params`, I could do so only if I provided validation data during training, otherwise it is empty dict or `<property at 0x10e6038b8>`, which can not be used as dict.

To reproduce:

 

Assignee

New H2O Bugs

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Reporter

Martin Barus

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