Adds a Compute API microversion that triggers returning an aggregate's UUID
field. This field is necessary for scripts that must populate the placement API
with resource provider to aggregate relationships, which rely on UUIDs for
global identification.
APIImpact
blueprint: return-uuid-from-os-aggregates-api
Change-Id: I4112ccd508eb85403933fec8b52efd468e866772
Closes-bug: #1652642