starting Block storage work : plumbing "volume" in jumpgate .. right now empty functions

-changing block storage to volume so that load_endpoints can pick volume endpoints
-enabling volume in config file
-mapping volume/detail endpoint to empty function .. build on this more .. 


result 

REQ: curl -i 'http://localhost:5000/volume/v2/13193/volumes/detail' -X GET -H "User-Agent: python-novaclient" -H "Accept: application/json" -H "X-Auth-Token: SDFhOTZNek9GY1kwKzkyZm9GUUREd1MzcGhnaGhqZjUyTUN2d3Z2eC90NVNUT1J5bHFDNEJ4QmpuWS8xTndRZWNmR1ZhUENIbnJHRlhTTGVTSW1JWENrSTg4cWhWTTFGQWhxN01IYmtJQ0lIZ0lwMk5pVys4MGRBd1RVYmtpVjlCWXhhL2Q2b0ZQU1RnT0k1UlRuVFJRNi9raHB6bXJBN0dtQUdESU04VWU4ZDRnWkc2bk81d0tNampMOG5QQThqVjFFTmpSejVKd29jQVFWbDNaZFZDNHF2Wkc5cm5BRDVFdVMySDdEOE9XLzlITDB2aTUyVjUwYTlnSWZ3eERuNQ=="

RESP: [200] CaseInsensitiveDict({'content-length': '15', 'x-compute-request-id': 'req-11b3c0c8-dd17-11e3-8a3e-064923b0a07b', 'server': 'gunicorn/18.0', 'connection': 'close', 'date': 'Fri, 16 May 2014 16:28:10 GMT', 'content-type': 'application/json'})
RESP BODY: {"volumes": []}

+----+--------+--------------+------+-------------+-------------+
| ID | Status | Display Name | Size | Volume Type | Attached to |
+----+--------+--------------+------+-------------+-------------+
+----+--------+--------------+------+-------------+-------------+