This PR addresses issue hashicorp#183

Solution :
On ASG, ignore load_balancers and targetgroup_arns modifications according to recommandations.

References :
hashicorp/terraform-provider-aws#9513
https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/autoscaling_attachment

modules/consul-cluster/main.tf

@@ -49,6 +49,10 @@ resource "aws_autoscaling_group" "autoscaling_group" {
       var.tags,
     ]
   )
+
+  lifecycle {
+    ignore_changes = [load_balancers, target_group_arns]
+  }
 }
 
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