Fix tempest

Tempest is currently failing with:

{'message': 'No valid host was found. Scheduling failed: No hosts available for tenant', 'code': 500, 'created': '2022-06-14T12:58:56Z'}. Server boot request ID: req-d449cdbb-6175-49eb-a9c7-658684098c9e.

This because the cloud is setup to use the tenant isolation filter and requires the the project ID to be set on a host-aggregate. As the users were being dynamically created, no aggregates existed with a matching project UUID.