Completing migration to dev@ceph.io

We created dev@ceph.io several weeks back. There has been plenty of time now for everyone to get subscribed, so please now direct all dev discussion for Ceph proper to dev@ceph.io and use this list for ceph kernel client development only. Avoid copying both lists unless the discussion is relevant both for userspace and the kernel. https://lists.ceph.io/postorius/lists/dev.ceph.io/ Thanks! sage