Comment 5 for bug 1388985

The UI is relying on a call to heat to parse and validate the template file
https://github.com/openstack/horizon/blob/master/openstack_dashboard/dashboards/project/stacks/forms.py#L147

which maps through some additonal UI abstraction and python-heatclient to be the same call as
heat template-validate -f template.txt -e env.txt

which returns
{
  "Description": "create a network",
  "Parameters": {
    "net_name": {
      "Default": "defaultnet",
      "Type": "String",
      "NoEcho": "false",
      "Description": "Name of private network to be created",
      "Label": "net_name"
    }
  }
}

This seems like a bug in Heat to me. The -e parameter is ignored when validating the template.

Thoughts from the heat team?