stat_items report unit as type to statsd
When sending a statsd metric we need to specify a type for statsd which can mainly be "g"auge, "c"ounter, "t"imer.
We used to just pass the stat_item unit into this field, but that is the unit of the metric and can be anything ("s" for seconds, "%" for utilization, ...). Change the type field so stat_items are sent as "g"auges so the different items will at least be displayed.
Patch is in Gerrit: