Add ASG cooldown and health_check_grace_period (#770)

* Add default_cooldown/health_check oprions

* Update CHANGELOG.md

* Update CHANGELOG.md

Co-Authored-By: Thierno IB. BARRY <ibrahima.br@gmail.com>

Co-authored-by: Thierno IB. BARRY <ibrahima.br@gmail.com>

CHANGELOG.md

@@ -13,6 +13,7 @@ project adheres to [Semantic Versioning](http://semver.org/).
 - Adding `encrypted` option to worker's root_block_device as read from the worker configurations (by @craig-rueda)
 - Use correct policy arns for CN regions (cn-north-1, cn-northwest-1) (by @cofyc)
 - Add support for ASG max instance lifetime (by @sidprak)
+- Add `default_cooldown` and `health_check_grace_period` options to workers ASG (by @ArieLevs)
 
 # History
 

local.tf

@@ -33,6 +33,8 @@ locals {
     asg_force_delete              = false                       # Enable forced deletion for the autoscaling group.
     asg_initial_lifecycle_hooks   = []                          # Initital lifecycle hook for the autoscaling group.
     asg_recreate_on_change        = false                       # Recreate the autoscaling group when the Launch Template or Launch Configuration change.
+    default_cooldown              = null                        # The amount of time, in seconds, after a scaling activity completes before another scaling activity can start.
+    health_check_grace_period     = null                        # Time in seconds after instance comes into service before checking health.
     instance_type                 = "m4.large"                  # Size of the workers instances.
     spot_price                    = ""                          # Cost of spot instance.
     placement_tenancy             = ""                          # The tenancy of the instance. Valid values are "default" or "dedicated".

workers.tf

@@ -78,6 +78,16 @@ resource "aws_autoscaling_group" "workers" {
     "max_instance_lifetime",
     local.workers_group_defaults["max_instance_lifetime"],
   )
+  default_cooldown = lookup(
+    var.worker_groups[count.index],
+    "default_cooldown",
+    local.workers_group_defaults["default_cooldown"]
+  )
+  health_check_grace_period = lookup(
+    var.worker_groups[count.index],
+    "health_check_grace_period",
+    local.workers_group_defaults["health_check_grace_period"]
+  )
 
   dynamic "initial_lifecycle_hook" {
     for_each = var.worker_create_initial_lifecycle_hooks ? lookup(var.worker_groups[count.index], "asg_initial_lifecycle_hooks", local.workers_group_defaults["asg_initial_lifecycle_hooks"]) : []

workers_launch_template.tf

@@ -77,6 +77,16 @@ resource "aws_autoscaling_group" "workers_launch_template" {
     "max_instance_lifetime",
     local.workers_group_defaults["max_instance_lifetime"],
   )
+  default_cooldown = lookup(
+    var.worker_groups_launch_template[count.index],
+    "default_cooldown",
+    local.workers_group_defaults["default_cooldown"]
+  )
+  health_check_grace_period = lookup(
+    var.worker_groups_launch_template[count.index],
+    "health_check_grace_period",
+    local.workers_group_defaults["health_check_grace_period"]
+  )
 
   dynamic mixed_instances_policy {
     iterator = item