Katib will use the Objective's metric to monitor the performance
of the model. It will create Trials until either the goal is reached or
the Controller has run the maximum defined number of Trials.
You can run the Experiment without specifying the goal. In that
case, Katib runs the Experiment until the corresponding successful Trials
reach maximum number of allowed Trials. This number is defined in the the
Trial Thresholds section above.