FedAvgLocalTrainingHandler forgot to update for pretrain/posttrain evaluation

[Hugomiralles]

In class FedAvgLocalTrainingHandler in script party/training/fedavg_local_training_handler.py, I think there is a mistake. The two methods get_train_metrics_pre and get_train_metrics_post (of the inherited class LocalTrainingHandler) are not applied, resulting in no local metrics for the aggregated method FedAvg.
Sorry for submitting an issue, I don't know how to make a pull request with whl files...

[Yi-Zoey]

Hi @Hugomiralles thanks for pointing out the bug. We are aware of it and working on improving the performance of the experimental manager.