keystone middleware for authentication and access control 

default policy allows full access to all
authentication against keystone
need to uncomment main-app related pipelines for keystone middleware auth in barbican-api-paste.ini file

use the bin/keystone-data.sh file to create a barbican service user.

 barbican/tests/test_middleware_auth.py

needs the test to be made automated and if we all develop in a keystone existent environment, comment made keystone middleware the default pipeline.