Hosts API should expose VM attributes, such as cpus and memory
The Foreman web interface shows the VM's cpu and memory size, but the API does not expose that information.
fixes #10720 - Adds API to get host vm attributes
This exposes an API to fetch a host's vm_compute_attributes,
such as vmware cpus and memory. It lives at a separate endpoint
because it involves a fetch for data from the compute resource,
and may have different performance characteristics than the database.