[Django 1.10] Define TEMPLATES

In Django 1.10, one *must* define TEMPLATES, and set the BACKEND
APP_DIRS to True. If this isn't done, the package cannot find
its html templates.

Change-Id: Ic4d238ad42931d71da00b468c5f9fd205fa9d4e6

openstack_auth/tests/settings.py

@@ -63,3 +63,10 @@ POLICY_FILES = {
     'identity': 'keystone_policy.json',
     'compute': 'nova_policy.json'
 }
+
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'APP_DIRS': True,
+    },
+]