Updated openstack/openstack
Project: openstack/keystone  b90fd79972423606e43aeb38d04d186d33963096
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Add version routes to KDS

Add the first real endpoints to the KDS server starting with the version
discovery endpoints.

Blueprint: key-distribution-server
Change-Id: If359a683e1c9614855d7c20e9f8009c2198a05f7