Now, when we update baymodel with the invalid flavor_id or
master_flavor_id parameters, the baymodel can be updated
successfully.
We need to validate the flavor_id, master_flavor, keypair and so on
before patching baymodel.
Closes-Bug: #1555490
Change-Id: I4ae3cd7c0be1161dacb6f0a80c5ee1b53d06d03d