Status currently reports fault tolerance in terms of the number of machines that can be lost. However, what it's actually counting is the number of zones that can be lost. This can be misleading when zones are used to represent something other than machines.

I think we should change the name of the field in status to reflect this fact as well as update the formatted fdbcli status output to report the number of zones that can be lost instead. See also #1420, which requests that we report zone counts in the formatted status output.