Empty String for Flavor Id Causes 500 status

[William Brothers]

Post request with an empty string ("") for the flavor_id property :
{
    "name": "Bill",
    "domains": [
        {
            "domain": "www.mywebsite.com"
        },
        {
            "domain": "blog.mywebsite.com"
        }
    ],
    "origins": [
        {
            "origin": "mywebsite.com",
            "port": 80,
            "ssl": false
        }
    ],
    "caching": [
        {
            "name": "default",
            "ttl": 3600
        },
        {
            "name": "home",
            "ttl": 17200,
            "rules": [
                {
                    "name": "index",
                    "request_url": "/index.htm"
                }
            ]
        },
        {
            "name": "images",
            "ttl": 12800,
            "rules": [
                {
                    "name": "images",
                    "request_url": "*.png"
                }
            ]
        }
    ],
    "restrictions": [
        {
            "name": "website only",
            "rules": [
                {
                    "name": "mywebsite.com",
                    "referrer": "www.mywebsite.com"
                }
            ]
        }
    ],
    "flavor_id": ""
}

And the system returned a 500 status with the following message:

{
"message": "The server encountered an unexpected condition which prevented it from fulfilling the request."
}

[Amit Gandhi (amit-gandhi)]

https://review.openstack.org/#/c/145072/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/145072
Committed: https://git.openstack.org/cgit/stackforge/poppy/commit/?id=e017ab6fda7c3e694440fc8bb7013bdfb7eb29c3
Submitter: Jenkins
Branch: master

commit e017ab6fda7c3e694440fc8bb7013bdfb7eb29c3
Author: amitgandhinz <email address hidden>
Date: Mon Jan 5 16:51:12 2015 -0500

    Set restrictions on field lengths

    Change-Id: I71290527ef344981b7901781afddb0c4102074c8
    Closes-Bug: 1406619
    Closes-Bug: 1406609