Neo: tensorflow_distributed_mnist_neo_inf1_studio.ipynb and tensorflow_distributed_mnist_neo_inf1.ipynb

In Studio, getting error message at the "Invoking the endpoint" section:
```
ModelError: An error occurred (ModelError) when calling the InvokeEndpoint operation: Received server error (0) from model with message "Your invocation timed out while waiting for a response from container model. Review the latency metrics for each container in Amazon CloudWatch, resolve the issue, and try again.". See https://us-east-1.console.aws.amazon.com/cloudwatch/home?region=us-east-1#logEventViewer:group=/aws/sagemaker/Endpoints/sagemaker-tensorflow-2020-08-12-17-45-22-684ml-inf1 in account -- for more information.
```

Also, may need to make a note the AZ of inf1 instance is limited to us-east-1 and us-west-2.
```
ValueError: Inferentia is not supported in region us-east-2. Supported regions are us-east-1, us-west-2
```