Make deregistration_delay attribute customizable for ALB Target Groups (#42)

* Make deregistration_delay attribute customizable for ALB Target Groups

The `deregistration_delay` attribute of a Target Group is set to 300 seconds by default
as a conservatively safe value. However, if a service owner knows that their connections stop faster
it makes sense to reduce the delay to speed up the deployments. This PR makes the customization
possible via the module.

* Ensure README.md and CHANGELOG.md are up to date

Author: vladdy

CHANGELOG.md

@@ -5,6 +5,25 @@ All notable changes to this project will be documented in this file.
 <a name="unreleased"></a>
 ## [Unreleased]
 
+- Make deregistration_delay attribute customizable for ALB Target Groups
+
+
+<a name="6.2.1"></a>
+## [6.2.1] - 2021-07-30
+
+- Add support to pick latest task definition ([#41](https://github.com/umotif-public/terraform-aws-ecs-fargate/issues/41))
+
+
+<a name="6.2.0"></a>
+## [6.2.0] - 2021-06-04
+
+- add tags iam role ([#34](https://github.com/umotif-public/terraform-aws-ecs-fargate/issues/34))
+
+
+<a name="6.1.0"></a>
+## [6.1.0] - 2021-05-10
+
+- Add support for enable_execute_command ([#33](https://github.com/umotif-public/terraform-aws-ecs-fargate/issues/33))
 
 
 <a name="6.0.0"></a>
@@ -181,7 +200,10 @@ All notable changes to this project will be documented in this file.
 - Initial commit
 
 
-[Unreleased]: https://github.com/umotif-public/terraform-aws-ecs-fargate/compare/6.0.0...HEAD
+[Unreleased]: https://github.com/umotif-public/terraform-aws-ecs-fargate/compare/6.2.1...HEAD
+[6.2.1]: https://github.com/umotif-public/terraform-aws-ecs-fargate/compare/6.2.0...6.2.1
+[6.2.0]: https://github.com/umotif-public/terraform-aws-ecs-fargate/compare/6.1.0...6.2.0
+[6.1.0]: https://github.com/umotif-public/terraform-aws-ecs-fargate/compare/6.0.0...6.1.0
 [6.0.0]: https://github.com/umotif-public/terraform-aws-ecs-fargate/compare/5.1.0...6.0.0
 [5.1.0]: https://github.com/umotif-public/terraform-aws-ecs-fargate/compare/5.0.1...5.1.0
 [5.0.1]: https://github.com/umotif-public/terraform-aws-ecs-fargate/compare/5.0.0...5.0.1

README.md

@@ -110,6 +110,7 @@ No modules.
 | [aws_lb_target_group.task](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/lb_target_group) | resource |
 | [aws_security_group.ecs_service](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/security_group) | resource |
 | [aws_security_group_rule.egress_service](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/security_group_rule) | resource |
+| [aws_ecs_task_definition.task](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ecs_task_definition) | data source |
 | [aws_iam_policy_document.read_repository_credentials](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
 | [aws_iam_policy_document.task_assume](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
 | [aws_iam_policy_document.task_ecs_exec_policy](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |

main.tf

@@ -95,11 +95,12 @@ resource "aws_security_group_rule" "egress_service" {
 resource "aws_lb_target_group" "task" {
   for_each = var.load_balanced ? { for tg in var.target_groups : tg.target_group_name => tg } : {}
 
-  name        = lookup(each.value, "target_group_name")
-  vpc_id      = var.vpc_id
-  protocol    = var.task_container_protocol
-  port        = lookup(each.value, "container_port", var.task_container_port)
-  target_type = "ip"
+  name                 = lookup(each.value, "target_group_name")
+  vpc_id               = var.vpc_id
+  protocol             = var.task_container_protocol
+  port                 = lookup(each.value, "container_port", var.task_container_port)
+  deregistration_delay = lookup(each.value, "deregistration_delay", null)
+  target_type          = "ip"
 
 
   dynamic "health_check" {