aws/client: Add PartitionID to Config (#2902)aws/client/metadata: Add PartitionID to ClientInfo (#2902)aws/endpoints: Add PartitionID to ResolvedEndpoint (#2902)
aws/endpoints: Fix resolve endpoint with empty region (#2911)- Fixes the SDK's behavior when attempting to resolve a service's endpoint when no region was provided. Adds legacy support for services that were able to resolve a valid endpoint. No new service will support resolving an endpoint without an region.
- Fixes #2909