[Enhancement]: Attribute arn_without_revision on aws_ecs_task_definition

[DBX12]

Description

I think this is highly useful if you are in an environment where you always want to use the latest active revision of a task definition. Per documentation, removing the revision number from the ARN of a task definition makes AWS use the latest, active revision of that task definition.
Assume you have a aws_task_definition.this defined somewhere else with full ARN arn:aws:ecs:eu-central-1:000000000000:task-definition/my-task-def:42. To make AWS use the latest active revision, one has to do that in terraform:

resource "aws_ecs_service" "this" {
  task_definition = replace(aws_ecs_task_definition.this.arn, "/:\\d+$/", "")
}

With my proposed change, one could do it like this:

resource "aws_ecs_service" "this" {
  task_definition = aws_ecs_task_definition.this.arn_without_revision
  # aws_ecs_task_definition.this.arn_without_revision would output
  # arn:aws:ecs:eu-central-1:000000000000:task-definition/my-task-def
}

Affected Resource(s) and/or Data Source(s)

• aws_ecs_task_definition

Potential Terraform Configuration

No response

References

No response

Would you like to implement a fix?

Yes

[github-actions]

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[github-actions]

This functionality has been released in v4.59.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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