Setting of SECRET_KEY is required for tests to complete on Django-1.5

Is not defined, tests will fail with the following error:

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/sphinx/ext/autodoc.py", line 321, in import_object
    __import__(self.modname)
  File "/builddir/build/BUILD/django_openstack_auth-1.0.8/openstack_auth/views.py", line 5, in <module>
    from django import shortcuts
  File "/usr/lib/python2.7/site-packages/django/shortcuts/__init__.py", line 11, in <module>
    from django.db.models.base import ModelBase
  File "/usr/lib/python2.7/site-packages/django/db/__init__.py", line 11, in <module>
    if settings.DATABASES and DEFAULT_DB_ALIAS not in settings.DATABASES:
  File "/usr/lib/python2.7/site-packages/django/conf/__init__.py", line 53, in __getattr__
    self._setup(name)
  File "/usr/lib/python2.7/site-packages/django/conf/__init__.py", line 48, in _setup
    self._wrapped = Settings(settings_module)
  File "/usr/lib/python2.7/site-packages/django/conf/__init__.py", line 152, in __init__
    raise ImproperlyConfigured("The SECRET_KEY setting must not be empty.")
ImproperlyConfigured: The SECRET_KEY setting must not be empty.