Avoid the default domain usage when the Domain is not specified in the project creation

[Raildo Mascena de Sousa Filho]

We should issue an exception here since if a v3 call does not explicitly specify the domain_id in the entity, it should be using a domain scoped token. However, the current tempest heat tests issue a v3 call without this. This is raised as bug #1283539. Once this is fixed, we should remove the line below and replace it with an error. Ahead of actually changing the code to raise an exception, we issue a deprecation warning.

Since we can't change the current behavior of V3, because it will be api-breaking. We need to fix it in the Keystone microversion.

https://opendev.org/openstack/keystone/src/branch/master/keystone/server/flask/common.py#L980-L998