Must deal with unset image names

[bhagemeier]

When having an empty image name which can be created by running 'glance image-create' w/o further arguments the OCCI interface fails. This probably does not happen very often, but the code should be able to deal with it gracefully.

2014-11-10 09:12:35.271 INFO nova.occiapi.wsgi.server [req-4459bf8a-5142-4e0d-8314-71975959ed6e demo demo] Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/eventlet/wsgi.py", line 384, in handle_one_response
result = self.application(self.environ, start_response)
File "/usr/lib/python2.7/dist-packages/paste/urlmap.py", line 206, in call
return app(environ, start_response)
File "/opt/stack/python-keystoneclient/keystoneclient/middleware/auth_token.py", line 663, in call
return self.app(env, start_response)
File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 144, in call
return resp(environ, start_response)
File "/usr/local/lib/python2.7/dist-packages/openstackocci_icehouse-1.0-py2.7.egg/occi_os_api/wsgi.py", line 152, in call
self._refresh_os_mixins(extras)
File "/usr/local/lib/python2.7/dist-packages/openstackocci_icehouse-1.0-py2.7.egg/occi_os_api/wsgi.py", line 170, in refresh_os_mixins
os_lst = [occify_terms(item['name']) for item in images]
File "/usr/local/lib/python2.7/dist-packages/openstackocci_icehouse-1.0-py2.7.egg/occi_os_api/wsgi.py", line 273, in occify_terms
term = term_name.strip().replace(' ', '').replace('.', '-').lower()
AttributeError: 'NoneType' object has no attribute 'strip'

[tmetsch]

Sure we can add this feature - which branch do you need it fastest?