nova list --status invalid-status results in ERROR

Hi,

Found during tempest:

test_list_servers_detailed_filter_by_invalid_status

==============================
Failed 1 tests - output below:
==============================

tempest.api.compute.admin.test_servers.ServersAdminTestJSON.test_list_servers_detailed_filter_by_invalid_status[id-d56e9540-73ed-45e0-9b88-98fc419087eb]
--------------------------------------------------------------------------------------------------------------------------------------------------------

Captured traceback:
~~~~~~~~~~~~~~~~~~~
    Traceback (most recent call last):
      File "tempest/api/compute/admin/test_servers.py", line 67, in test_list_servers_detailed_filter_by_invalid_status
        body = self.client.list_servers(detail=True, **params)
      File "tempest/lib/services/compute/servers_client.py", line 153, in list_servers
        resp, body = self.get(url)
      File "tempest/lib/common/rest_client.py", line 291, in get
        return self.request('GET', url, extra_headers, headers)
      File "tempest/lib/services/compute/base_compute_client.py", line 48, in request
        method, url, extra_headers, headers, body, chunked)
      File "tempest/lib/common/rest_client.py", line 665, in request
        resp, resp_body)
      File "tempest/lib/common/rest_client.py", line 829, in _error_checker
        message=message)
    tempest.lib.exceptions.ServerFault: Got server fault
    Details: The server has either erred or is incapable of performing the requested operation.

This can also be reproduced with simple command:

nova list --status invalid-status

Here is the upstream bug with a fix for nova 13.1.2

https://bugs.launchpad.net/nova/+bug/1579706

Regards,
Sercan