Revert "Replacing policy with an AWS predefined one"

This reverts commit 69a5d2a.

Author: jnonino

autoscaling.tf

@@ -6,9 +6,12 @@ resource "aws_iam_role" "ecs_autoscale_role" {
   assume_role_policy = file("${path.module}/files/iam/ecs_autoscale_iam_role.json")
 }
 
-resource "aws_iam_role_policy_attachment" "ecs_autoscale_role_policy_attach" {
-  role       = aws_iam_role.ecs_autoscale_role.name
-  policy_arn = "arn:aws:iam::aws:policy/aws-service-role/AWSApplicationAutoscalingECSServicePolicy"
+resource "aws_iam_role_policy" "ecs_autoscale_role_policy" {
+  name = "${var.name_preffix}-ecs-autoscale-role-policy"
+  role = aws_iam_role.ecs_autoscale_role.id
+  policy = file(
+    "${path.module}/files/iam/ecs_autoscale_iam_role_policy.json",
+  )
 }
 
 #------------------------------------------------------------------------------

files/iam/ecs_autoscale_iam_role_policy.json

@@ -0,0 +1,24 @@
+{
+    "Version": "2012-10-17",
+    "Statement": [
+        {
+            "Effect": "Allow",
+            "Action": [
+                "ecs:DescribeServices",
+                "ecs:UpdateService"
+            ],
+            "Resource": [
+                "*"
+            ]
+        },
+        {
+            "Effect": "Allow",
+            "Action": [
+                "cloudwatch:DescribeAlarms"
+            ],
+            "Resource": [
+                "*"
+            ]
+        }
+    ]
+}