[oslo][freezer][watcher][requirement][release] Resetting the DPL model liaisons

Hi, DPL projects, To keep the DPL model/liaisons up to date, TC defined the new policy to reset the DPL state/liaisons every cycle[1]. If the project wants to continue the DPL model, they can opt-in the same; otherwise, they fall into the PTL model/election process. I am resetting the DPL model for all the existing 5 DPL projects[2]. If needed, feel free to opt-in the DPL model for the next cycle. [1] https://governance.openstack.org/tc/reference/distributed-project-leadership... [2] this series - https://review.opendev.org/c/openstack/governance/+/925834/1 -gmann