Migrate notebook references from the now deprecated EMR CLI to the recommended AWS CLI

[donnemartin]

[donnemartin]

Related to the AWS CLI, see SAWS.

[Anirudh257]

@donnemartin , Sir. There are many scikit learn commands in the code which has been deprecated too. Does that come under this issue? I am a beginner, I can be mistaken too.

[donnemartin]

Hi @Anirudh257, I think that should be a separately filed issue.