backend/s3: Support New af-south-1 Region Automatic Validation

[bflad]

Current Terraform Version

Terraform v0.12.24

Use-cases

https://aws.amazon.com/about-aws/whats-new/2020/04/announcing-aws-africa-cape-town-region/

Amazon Web Services (AWS) is announcing the immediate availability of the AWS Africa (Cape Town) Region, which is the first AWS Region in Africa. The AWS Africa (Cape Town) Region consists of three Availability Zones

The region shorthand name is af-south-1. Allow S3 Back storage in the new region without special backend configuration.

Attempted Solutions

terraform {
  # ... potentially other configuration ...

  backend "s3" {
    # ... other configuration ...

    region = "af-south-1"
  }
}

$ terraform init

Initializing the backend...

Error: Invalid AWS Region: af-south-1

Available Workaround

terraform {
  # ... potentially other configuration ...

  backend "s3" {
    # ... other configuration ...

    region                 = "af-south-1"
    skip_region_validation = true
  }
}

Proposal

Update AWS Go SDK dependency to v1.30.12, which contains new region endpoint information.

References

• Previous new region issue: backend/s3: Support New me-south-1 Region Automatic Validation #22254

[bflad]

Support for this has been merged into master, which is currently the development branch for the first releases of Terraform CLI v0.13. Please follow #24745 and the v0.12 branch for updates about any potential Terraform CLI v0.12.25 release that would also contain this update.

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