ImportError: cannot import name SecurityGroupsClient

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ERROR: Failure: ImportError (cannot import name SecurityGroupsClient)
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Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/nose/loader.py", line 390, in loadTestsFromName
    addr.filename, addr.module)
  File "/usr/lib/pymodules/python2.7/nose/importer.py", line 39, in importFromPath
    return self.importFromDir(dir_path, fqname)
  File "/usr/lib/pymodules/python2.7/nose/importer.py", line 86, in importFromDir
    mod = load_module(part_fqname, fh, filename, desc)
  File "/home/jpipes/repos/tempest/tempest/tests/test_servers.py", line 2, in <module>
    from tempest import openstack
  File "/home/jpipes/repos/tempest/tempest/openstack.py", line 6, in <module>
    from tempest.services.nova.json.extensions_client import SecurityGroupsClient
ImportError: cannot import name SecurityGroupsClient