TypeError: expected str, bytes or os.PathLike object, not bool

[davidemoro]

The "save_path" patch included in the "backend_kwargs" argument of the "predict" method will be overridden by a bool by "parse_backend_predict_kwargs".

This is caused by the following line:
save_path = kwargs.get("persist", None)

I think it should be instead:
save_path = kwargs.get("save_path", None)

Code reproducing the issue:

    predictor.predict(
        file_path,
        predictor_path=predictor_path,
        job_name=job_name,
        instance_type=instance_type,
        instance_count=1,
        wait=True,
        backend_kwargs={'save_path': output_path,     # this is a file system path!!
                        'transform_kwargs': {
                            'content_type': 'text/csv',
                            'split_type': 'Line',
                            'model_client_config': {
                                'InvocationsTimeoutInSeconds': 60*60,
                                'InvocationsMaxRetries': 2,}, },
                        'transformer_kwargs': {
                            'strategy': 'MultiRecord',
                            'assemble_with': 'Line',
                            'max_payload': 2, },
                        },
    )

Exception:

  File "//app.py", line 234, in <module>
    cli()  # pragma: no cover
  File "/opt/conda/lib/python3.9/site-packages/click/core.py", line 1157, in __call__
    return self.main(*args, **kwargs)
  File "/opt/conda/lib/python3.9/site-packages/click/core.py", line 1078, in main
    rv = self.invoke(ctx)
  File "/opt/conda/lib/python3.9/site-packages/click/core.py", line 1688, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/opt/conda/lib/python3.9/site-packages/click/core.py", line 1434, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/opt/conda/lib/python3.9/site-packages/click/core.py", line 783, in invoke
    return __callback(*args, **kwargs)
  File "//app.py", line 230, in batch_inference
    batch_inference_inner(input_path, predictor_path, output_path, instance_type, instance_count)
  File "//app.py", line 114, in batch_inference_inner
    if fs.get_protocol(input_path) != 'file':
  File "/opt/conda/lib/python3.9/site-packages/autogluon/cloud/predictor/cloud_predictor.py", line 556, in predict
    return self.backend.predict(
  File "/opt/conda/lib/python3.9/site-packages/autogluon/cloud/backend/sagemaker_backend.py", line 739, in predict
    pred, _ = self._predict(
  File "/opt/conda/lib/python3.9/site-packages/autogluon/cloud/backend/sagemaker_backend.py", line 1227, in _predict
    results_path = self.download_predict_results(save_path=save_path)
  File "/opt/conda/lib/python3.9/site-packages/autogluon/cloud/backend/sagemaker_backend.py", line 896, in download_predict_results
    save_path = os.path.expanduser(save_path)
  File "/opt/conda/lib/python3.9/posixpath.py", line 231, in expanduser
    path = os.fspath(path)
TypeError: expected str, bytes or os.PathLike object, not bool

Reproducible with the latest autogluon release:

FROM 763104351884.dkr.ecr.us-east-1.amazonaws.com/autogluon-training:0.8.2-gpu-py39-cu117-ubuntu20.04

RUN pip install --no-cache-dir -U autogluon.cloud