Fix #172
Signed-off-by: Mingxin Zheng [email protected]

Dints in Auto3DSeg has an override function train that first search and then train. Previously, all train_param override, such as num_epochs, will be passed to the search and train functions with additional key prefix: searching# and training#, because these hyperparameters are under searching and training in hyper_parameter_search.yml and hyper_parameter.yml, respectively.

This PR fixes an issue that user cannot pass an override if the parameter is not under searching or training in those config files. The PR will add the prefix only if the override key can be found under searching in hyper_parameter_search.yml and training in hyper_parameter.yml. For example, cache_rate is not either under searching or training. So the function won't add searching# or training# in the override process and the param can be correctly set in search and train.

This will also fix if the user wants to override other params in the root level.