managed_spot_training_object_detection.ipynb issues

https://github.com/awslabs/amazon-sagemaker-examples/blob/master/introduction_to_amazon_algorithms/managed_spot_training_object_detection/managed_spot_training_object_detection.ipynb

It upgrades to v2, then fails. Needs the pip install line to be removed or updated/pinned to v1.

Open introduction_to_amazon_algorithms/managed_spot_training_object_detection/managed_spot_training_object_detection.ipynb and locate the pip install line. Check the dependency version used by the notebook, then remove or update the line to pin version 1 as appropriate. Done means the notebook no longer fails after upgrading to version 2.

Written by the indexing model from the issue text.