Add `get summary api` to support that get total price of each tenant and resource, also can order by price Change-Id: Iafab81ac539e70c958ed03460c165d950a2b022e Implements: blueprint price-groupby-fields
Add `get summary api` to support that get total price of each tenant and resource, also can order by price Change-Id: Iafab81ac539e70c958ed03460c165d950a2b022e Implements: blueprint price-groupby-fields