Updated openstack/openstack
Project: openstack/python-keystoneclient  6e22db3ddb18a7ffaf0c11b7e658305cd84eedd9

Isolate get_discovery function

When we get to having version independent identity plugins they need to
be able to share the discovery cache with the session. This function
should therefore be reusable rather than making the cache on the session
public.

DocImpact: Adds a new get_discovery function to identity plugins. This
function is expected to be used by subclasses doing custom URL discovery
rather than users.

Blueprint: version-independant-plugins
Change-Id: I769b4e2cd59a4dd167c4dcd8f14641081f867a71