Automatic merge from submit-queue (batch tested with PRs 51224, 51191, 51158, 50669, 51222)
Change the FakeCloudAddressService to store Alpha objects internally
The change assumes the compute Alpha object is the superset of the v1
object. By storing the Alpha objects internally in the fake, we can
convert them to Beta and v1 to test different functions.
0cf928f681