GET /reverse/floatingips/%s returns wrong record

[Tyr Johanson]

1) Create several floating IPs
2) Attempt to list one of them using Desginate v2 API. No matter which floating ip is requested, data for the same ip is returned.

Example: Request id = 20a..., but response is always id = 185...

request:
GET http://192.168.56.101:9001/v2/reverse/floatingips/RegionOne:20a5fda3-79e2-4068-803f-ca1b7bac3908

response:
{"status": "ACTIVE", "ptrdname": null, "description": null, "links": {"self": "http://192.168.56.101:9001/v2/reverse/floatingips/RegionOne:18512296-d57f-4388-8dda-51bf475c7285"}, "ttl": null, "address": "172.24.4.6", "action": null, "id": "RegionOne:18512296-d57f-4388-8dda-51bf475c7285"}