Support function package md5 check for qinling

As a user, i want to check the function package md5 either when uploading or downloading.

Support function webhook for qinling

The function should be invoked as a webhook without authentication, so that qinling could be integrated with github or 3rd party apps.

Allow admin user to get other projects resources for qinling

As admin user, I want to get resources of other projects.

Limit container resource consumption for qinling

Reference: http://docs.aws.amazon.com/lambda/latest/dg/limits.html

Multi-region support in shared Keystone service deployment for OpenStack Dashboard (Horizon)

Summary ======= Multi-region support in shared Keystone service deployment. Motivation ========== As a public cloud provider(Catalyst Cloud) based on OpenStack, we deployed Keystone as a shared identity service across 3 regions, our customers have been asking for the feature that they could select their preferred r...