While we are waiting to see if the Nova specs process works out, I have started a personal copy of the repo and tailored it to Keystone: https://github.com/admiyo/keystone-specs/ I've made use of it for a Blueprint https://blueprints.launchpad.net/keystone/+spec/crls Which is only partially completed: https://github.com/admiyo/keystone-specs/blob/CRL/specs/juno/OS-SIMPLECERT-CRL.rst