Deprecated library in sample

[tarepan]

Summary

The sample use sagemaker_containers, which is already deprecated.

Detail

Sample "amazon-sagemaker-managed-spot-training" use sagemaker_containers.

amazon-sagemaker-managed-spot-training/pytorch_managed_spot_training_checkpointing/source_dir/cifar10.py

Line 3 in 3fdf4d3

import sagemaker_containers

The library is already deprecated.

WARNING: This package has been deprecated.
ref

Using SageMaker Inference Toolkit maybe better.

[eitansela]

Hello @tarepan
Thanks for the feedback.
I will fix it in the following days.

[eitansela]

Issue fixed with latest commit - Upgraded PyTorch version to 1.6.0 and stopped using deprecated sagemaker_containers package.