Nova quota-update fails with HTTP 400

If I do:

nova --debug quota-update --cores 400 ffd146506e2444da9d378b79f5e1d7f0

I get:

ERROR: Bad key(s) force in quota_set (HTTP 400) (Request-ID: req-5ecdd1c8-a9f0-4447-9e37-e0b16fce2029)

Request and response body are:

REQUEST BODY: {"quota_set": {"force": false, "tenant_id": "ffd146506e2444da9d378b79f5e1d7f0", "cores": 400}}

RESP: [400] {'date': 'Fri, 26 Apr 2013 19:12:53 GMT', 'content-length': '73', 'content-type': 'application/json; charset=UTF-8', 'x-compute-request-id': 'req-5ecdd1c8-a9f0-4447-9e37-e0b16fce2029'}
RESP BODY: {"badRequest": {"message": "Bad key(s) force in quota_set", "code": 400}}

Stacktrace is:

DEBUG (shell:768) Bad key(s) force in quota_set (HTTP 400) (Request-ID: req-5ecdd1c8-a9f0-4447-9e37-e0b16fce2029)
Traceback (most recent call last):
  File "/opt/stack/python-novaclient/novaclient/shell.py", line 765, in main
    OpenStackComputeShell().main(map(strutils.safe_decode, sys.argv[1:]))
  File "/opt/stack/python-novaclient/novaclient/shell.py", line 701, in main
    args.func(self.cs, args)
  File "/opt/stack/python-novaclient/novaclient/v1_1/shell.py", line 2835, in do_quota_update
    _quota_update(cs.quotas, args.tenant, args)
  File "/opt/stack/python-novaclient/novaclient/v1_1/shell.py", line 2715, in _quota_update
    manager.update(identifier, force_update, **updates)
  File "/opt/stack/python-novaclient/novaclient/v1_1/quotas.py", line 68, in update
    return self._update('/os-quota-sets/%s' % tenant_id, body, 'quota_set')
  File "/opt/stack/python-novaclient/novaclient/base.py", line 158, in _update
    _resp, body = self.api.client.put(url, body=body)
  File "/opt/stack/python-novaclient/novaclient/client.py", line 236, in put
    return self._cs_request(url, 'PUT', **kwargs)
  File "/opt/stack/python-novaclient/novaclient/client.py", line 217, in _cs_request
    **kwargs)
  File "/opt/stack/python-novaclient/novaclient/client.py", line 199, in _time_request
    resp, body = self.request(url, method, **kwargs)
  File "/opt/stack/python-novaclient/novaclient/client.py", line 193, in request
    raise exceptions.from_response(resp, body, url, method)
BadRequest: Bad key(s) force in quota_set (HTTP 400) (Request-ID: req-5ecdd1c8-a9f0-4447-9e37-e0b16fce2029)

This happens on trunk.

If I edit the server code to allow 'force' as _good_ key, the operation goes through just fine, but I am not 100% sure if that's the right fix.