Feature request: include Redshift and SageMaker instances

[waldner]

They can be found here:

https://aws.amazon.com/redshift/pricing/ http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html

These instances are unlike any other types.

[BigDataDaddy]

Bump.

[PatMyron]

@powdahound could close this out in favor of the more general https://github.com/powdahound/ec2instances.info/issues/352

have done similar work here: https://github.com/aws-cloudformation/cfn-python-lint/blob/master/scripts/update_specs_from_pricing.py

[kmulka-bloomberg]

@EverettBerry Did this really add SageMaker prices? I'm not seeing them. Maybe there was some confusion as the title changed over the course of this issue's life.