Sources: Add AWS Region Selection

API calls to newer AWS regions require the caller to specify the region in the request. As a result, cost management need the sources flow to

1. Allow the user to specify the AWS region for the source being added
2. Flow the appropriate AWS source to the services so it can be utilized on S3 AWS API calls

This is a fairly high priority because we cannot support newer AWS regions. This would impact both Cost Management and Hybrid Committed Spend (done by the cost management team).

Impacts

• Sources Team
• Cost Management Team
• Cloud Meter
• Other consumers of AWS sources

Requires

• Updates to the Sources UI
• Updates to the Sources API/Messages

cc: kriedese, rhn-support-kdixon)

Dropdown list populated via this command:

{{>>> from boto3.session import Session
>>> s = Session()
>>> s.get_available_regions('s3')
['af-south-1', 'ap-east-1', 'ap-northeast-1', 'ap-northeast-2', 'ap-northeast-3', 'ap-south-1', 'ap-southeast-1', 'ap-southeast-2', 'ap-southeast-3', 'ca-central-1', 'eu-central-1', 'eu-north-1', 'eu-south-1', 'eu-west-1', 'eu-west-2', 'eu-west-3', 'me-central-1', 'me-south-1', 'sa-east-1', 'us-east-1', 'us-east-2', 'us-west-1', 'us-west-2']}}