This highlights:
- The dev-quickstart guide, which is more up to date than most
contributor docs.
- Common docs (OpenDev / OpenStack contributor guides)
- Bug information (also very up to date)
This removes:
- Top-level link to BfV and multitenant devstacks; these configs are
linked from devstack-guide
- Hilariously out of date information around branch support
Change-Id: If47d9776c65c91b972a3fab8364eacc50a29b2bb
Depends-On: https://review.opendev.org/c/openstack/ironic/+/920365
c6328874a5