Basic conversion of Keystone's core application to flask framework.
This doesn't add much in the way of flask-specific-isms but should
get keystone running directly under flask. This implementation does
not use paste-deploy.
Change-Id: Ib4c1ed3f645dd55fbfb76395263ecdaf605caae7
Remove endpoint_policy as an extension and move it to a core resource.
For now we leave the database migrations in the extension directory
until we have a general policy for merging these into core.
DocImpact: You should no longer run the migrations for this extension.
Implements: bp replace-extensions
Change-Id: I6215b7df497c142a5e73b62543e0d76458c85f64
Lance Bragstad