- Support VM management on Horizon
- Support DNS management on Horizon
- Support VM Puppet config on Horizon
- Support sudo policy management on Horizon
- Allow projectadmins to change project roles without OSM
- Support project creation/deletion via Horizon
- Support tool creation/management on Striker
- Replace or discard 'service group' functionality on OSM
- Replace LDAP shell account name account creation customization
- Replace/remove Hiera namespace Puppet customization
- Remove ext-openstackmanager from the "Extensions used by Wikimedia" list in the translatewiki configuration - done in https://gerrit.wikimedia.org/r/c/translatewiki/+/1046746
- Stop loading the extension
- Remove {{OnWikimedia}} from on-wiki documentation (edit)
- Stop loading extension i18n
- Stop branching for every train
And then we can archive it: T367220: Archive the OpenStackManager extension