[BUG] Daily Utilization Visual Data Element is Miscounted if hosts retired while in active cloud

[sadsfae]

In some situations we're seeing Daily Utilization used by the wiki page and visual summaries as showing the wrong number, sometimes > 100%.

[sadsfae]

This is caused by hosts being retired while they are in an active cloud, we will likely need to develop a check for this but in the meantime the --retire documentation has been updated to instruct users to first --shrink or terminate any active assignments prior.