the groupby functionality allows you to group by instance_type which
allows for the equivalent functionality of this meter. we should
drop it so we avoid duplicating data.
see: I568b5ca3d84371c4fd3bbdfed7b3e801164dbc5e
DocImpact
Change-Id: Ia380a0b87999f32fd339bb3b596ec8e18fdff0fe
Closes-Bug: #1208365