Fred Vogt

AWS recently added new fields, most notably `region`: region, placement group name, partition number, host ID, and availability zone-ID: https://aws.amazon.com/about-aws/whats-new/2020/08/amazon-ec2-instance-metadata-service-supports-additional-fields-improved-automation-operability/ I could create a PR. ``` placement/group-name placement/host-id placement/partition-number placement/region...

A use case for this is scripts that access ECR which has AWS account ids in the repository URL. I can submit a PR. Implemented in a fork: * https://github.com/doctorondemand/aws-mock-metadata/pull/1