Add an owner to allocations. Depending on policy, a non-admin
can then create an allocation and have the owner set to their
project. Allocation processing then respects the owner.
Change-Id: I2965a4a601b9fa2c0212097da37b104a3e5514df
Story: #2006506
Task: #37540
This feature addresses the case of moving the already deployed nodes
under the allocation API.
Change-Id: I29d0bd3663e0d1b27727a700c0f0e0fb6ceac1d9
Story: #2005014
Task: #29491