Service type aliases are ignored #3207

The OpenStack Service Types Authority is the central authority for handing out service types to projects for their services. Per the docs for same:

Each OpenStack service with a REST API must have a well known service type. The well known service type guarantees a documented API is available for that service. Users of this service can trust that it will be the same between different OpenStack environments.

We currently allow users to retrieve services by service type and service name, but we do not allow them to retrieve by a service type alias and we are using aliases in some places in place of the official type (for example, volumev3 instead of block-storage). We should correct both issues.