octopus repo lock

We'd like to lock the repo and start QE validation on v15.2.2 early next week. PRs still in progress: https://github.com/ceph/ceph/pulls?q=is%3Aopen+label%3Aoctopus-batch-1+label... cephfs - still re-running and needs to be approved/merged - https://trello.com/c/36K5aNYm rados/rgw - https://trello.com/c/3Tp1Bjzu (ready for review) https://trello.com/c/p07LqZvi (almost ready) Current plan is to merge all PRs this week, lock the repo, upgrade/test the sepia lab to the latest octopus release and and start QE validation in parallel. Thx YuriW