Use track_latest attribute for the aws_ecs_task_definition resource at service module

[ivan-sukhomlyn]

Is your request related to a new offering from AWS?

The track_latest attribute for the aws_ecs_task_definition resource released in in v5.37.0 of the Terraform AWS Provider

Related PR - hashicorp/terraform-provider-aws#30154

Is your request related to a problem?

Simplify the service module source code and pass sorting of ECS Taks Definition revisions to the Terraform provider.

Describe the solution you'd like.

Use the track_latest = true argument at the aws_ecs_task_definition instead of a custom implementation

terraform-aws-ecs/modules/service/main.tf

Lines 589 to 608 in 8b97783

	# This allows us to query both the existing as well as Terraform's state and get
	# and get the max version of either source, useful for when external resources
	# update the container definition
	max_task_def_revision = local.create_task_definition ? max(aws_ecs_task_definition.this[0].revision, data.aws_ecs_task_definition.this[0].revision) : 0
	task_definition = local.create_task_definition ? "${aws_ecs_task_definition.this[0].family}:${local.max_task_def_revision}" : var.task_definition_arn
	}
	# This allows us to query both the existing as well as Terraform's state and get
	# and get the max version of either source, useful for when external resources
	# update the container definition
	data "aws_ecs_task_definition" "this" {
	count = local.create_task_definition ? 1 : 0
	task_definition = aws_ecs_task_definition.this[0].family
	depends_on = [
	# Needs to exist first on first deployment
	aws_ecs_task_definition.this
	]
	}

More Details

An appropriate GH issue - hashicorp/terraform-provider-aws#20121

[ivan-sukhomlyn]

@antonbabenko @bryantbiggs I can make a PR to the wip/v6 branch as it requires a bump of the AWS provider version to >= 5.37 if you are ok with that activity.
Thanks!

[bryantbiggs]

yes please do - closing this issue though since its a duplicate of #164

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