hashicorp/terraform — pull request #716 by svanharmelen (2014-12-25 22:13:28+00:00)
Title: provider/aws: fixing aws_elb schema

If not suppling the `availability_zones`, they will be computed (meaning an update/refresh will retrieve the info and update the values to the state file).

So without the `Computed = true` the diff will always flag this as a change, even when it’s not.