nova.tests.unit.api.openstack.compute.test_fping.FpingTestV21.test_fping_index_policy
-------------------------------------------------------------------------------------

Captured traceback:
~~~~~~~~~~~~~~~~~~~
    Traceback (most recent call last):
      File "nova/tests/unit/api/openstack/compute/test_fping.py", line 70, in test_fping_index_policy
        res_dict = self.controller.index(req)
      File "nova/api/openstack/wsgi.py", line 928, in version_select
        return func.func(self, *args, **kwargs)
      File "nova/api/validation/__init__.py", line 192, in wrapper
        return func(*args, **kwargs)
      File "nova/api/openstack/wsgi.py", line 833, in wrapped
        raise webob.exc.HTTPInternalServerError(explanation=msg)
    webob.exc.HTTPInternalServerError: Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
    <type 'exceptions.TypeError'>


Captured pythonlogging:
~~~~~~~~~~~~~~~~~~~~~~~
    2018-05-10 08:46:24,576 ERROR [nova.api.openstack.wsgi] Unexpected exception in API method
    Traceback (most recent call last):
      File "nova/api/openstack/wsgi.py", line 801, in wrapped
        return f(*args, **kwargs)
      File "nova/api/openstack/compute/fping.py", line 100, in index
        context, search_opts=search_opts)
      File "nova/compute/api.py", line 2445, in get_all
        context, filters, limit, marker, fields, sort_keys, sort_dirs)
      File "nova/compute/instance_list.py", line 115, in get_instance_objects_sorted
        cell_mappings=cell_mappings)
      File "nova/tests/unit/api/openstack/fakes.py", line 379, in _return_servers
        **kwargs)
    TypeError: stub_instance() got an unexpected keyword argument 'cell_mappings'