StructuredStateManagement

Summary

Move away from ad-hoc states and state transitions to a more concrete organized structured state management in nova.

Requirements

https://etherpad.openstack.org/task-system

Discussions

https://etherpad.openstack.org/the-future-of-orch

Plan of record

1. Create prototype.
2. Get feedback from summit session.
3. Get more feedback from email list & heat folks about common library.
4. Adjust prototype as needed from feedback.
5. Split prototype into small chunks.
6. Adjust tests for each small chunks.
7. Start to submit prototype chunks into review.openstack.org (disabling whole component until ready to turn on).