Comment 3 for bug 1280151

We are seeing a similar issue while trying to update an "OS::Nova::Server" resource.

Here's the resource:
"instance": {
            "Type": "OS::Nova::Server",
            "Properties": {
                "name": {"Fn::Join" : ["-", [ {"Ref" : "AWS::StackName"}, "cloudview01"]]},
                "availability_zone": "az1",
                "image": { "Ref" : "PSOStandardUbuntuLinuxImageId" },
                "flavor": "standard.medium",
                "key_name": { "Ref" : "StackProvisioningSSHKeyName" },
                "networks": [{"port": { "Ref" : "port_floating" }}],
                "metadata": {"tags": {"Fn::Join" : ["", ["Role_role::infra_services::cloudview,Stack_", {"Ref" : "AWS::StackName"}, ",Provisioner_Auto"]]}},
  "flavor_update_policy" : "REPLACE"
            }
        }

The final failing Heat event:
            "logical_resource_id": "instance",
            "resource_status_reason": "Conflict: Port 3f1e9c8e-ac1c-4d78-95b9-b10301a2690c is still in use. (HTTP 409) (Request-ID: req-46f28a5c-d795-4bb7-8d2c-8edc30ca6256)",
            "resource_status": "CREATE_FAILED"