More disk space for fs.utah.cloudlab.us
Similar to fs.apt.emulab.net, we don't have as much space in the ZFS pool on fs (6TB currently). Ideally, we would have more like 12TB as we do on Emulab, Wisconsin and Clemson. Unlike Apt, the Moonshot control node has 20TB in total. So I should be able to reclaim space from the old "dbox" VM to add another 6TB to the ZFS pool.