WIP: Enhancement auth wsgi

** Not ready for merge, making available for others to comment **

- Adds a new Auth Middleware that can replace the Keystone Middleware with the advantage of not requiring an administrative token
-- Preferably has its own redis instance for caching the storage catalog

Very. There is also a parameter that can be used to fuzz the time (e.g now + X). This just checks to see if it expired now or in the past.