From 37eb1cba88a13556d1592f1cde2c043c39beb668 Mon Sep 17 00:00:00 2001
From: Trevor Pounds <trevor.pounds@gmail.com>
Date: Sun, 31 Jan 2016 17:44:19 -0800
Subject: [PATCH] Make availability zones a computed attribute.

Fixes a diff calculation error when only a VPC zone
identifiers is provided. In this case the associated
availability zones are computed from the subnets per
the AWS documentation.
---
 builtin/providers/aws/resource_aws_autoscaling_group.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/builtin/providers/aws/resource_aws_autoscaling_group.go b/builtin/providers/aws/resource_aws_autoscaling_group.go
index dc6754d39..6f66744db 100644
--- a/builtin/providers/aws/resource_aws_autoscaling_group.go
+++ b/builtin/providers/aws/resource_aws_autoscaling_group.go
@@ -92,6 +92,7 @@ func resourceAwsAutoscalingGroup() *schema.Resource {
 			"availability_zones": &schema.Schema{
 				Type:     schema.TypeSet,
 				Optional: true,
+				Computed: true,
 				Elem:     &schema.Schema{Type: schema.TypeString},
 				Set:      schema.HashString,
 			},