OpenID Provider for all the OpenStack infrastructure for OpenStack Core Infrastructure

OpenStack requires an authentication solution (A1) to tie all of their web properties together under a single provider of identification.

OpenId - Server Core Logic - Authentication Workflow for OpenStack Core Infrastructure

implement http://openid.net/specs/openid-authentication-2_0.html#requesting_authentication. Basically implement handling of authentication request (setup and checkid modes) and all related logic