This slipped in with I4e80ad8ffe1d4992e405ea516b8762109758d7eb; it
should be openafs, not openstack.
Change-Id: Iefc41f9085d86e9fdaa13c6e5b90f1c99b7a2d83
Move common setup steps into a openafs-server-config role, and create
openafs-file-server and openafs-db-server roles to manage fileserver
and db servers respectively.
Modify the playbook to run these roles against the AFS servers.
Change-Id: I4e80ad8ffe1d4992e405ea516b8762109758d7eb