flask tests fail with older versions of python-werkzeug

nosetests tests/test_flask.py
.F........
======================================================================
FAIL: test_custom_clientside_error (test_flask.FlaskrTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/jamespage/src/ubuntu/cloud-archive/havana/python-wsme-0.5b5/tests/test_flask.py", line 135, in test_custom_clientside_error
    assert json.loads(r.data)['faultstring'] == '403: Forbidden'
AssertionError:
-------------------- >> begin captured stdout << ---------------------
{u'debuginfo': None, u'faultcode': u'Server', u'faultstring': u"403: You're not allowed in there!"}

--------------------- >> end captured stdout << ----------------------
-------------------- >> begin captured logging << --------------------
wsme.api: ERROR: Server-side error: "403: You're not allowed in there!". Detail:
Traceback (most recent call last):

  File "/home/jamespage/src/ubuntu/cloud-archive/havana/python-wsme-0.5b5/wsmeext/flask.py", line 65, in wrapper
    result = f(*args, **kwargs)

  File "/home/jamespage/src/ubuntu/cloud-archive/havana/python-wsme-0.5b5/tests/test_flask.py", line 52, in model_secret
    abort(403, description="You're not allowed in there!")

  File "/usr/lib/python2.7/dist-packages/werkzeug/exceptions.py", line 525, in __call__
    raise self.mapping[code](*args, **kwargs)

Forbidden: 403: You're not allowed in there!

--------------------- >> end captured logging << ---------------------

----------------------------------------------------------------------
Ran 10 tests in 0.023s

FAILED (failures=1)

This is not an issue per-say in Saucy; however this package is a backport target for the Ubuntu Cloud Archive and the test fails due to different handling of the description keyword in newer versions of python-werkzeug.

Dropping the custom description (which is then ignored in the actual test case) resolved the issues on 13.10 and 12.04.