Expose Subscriptions Consumed in AAP

[valkiriaaquatica]

Hi,
Summary
I'm getting insights from my AAP domain with Prometheus and Grafana and there is one data that I think is left and would be nice to have. In AAP you have a number of licenses to work with, and you can but it is not recommended to exceed that number of licenses.
So now I get the number of licenses I have using the awx_license_instance_total metrics, but it could be nice to also have a metrics of the actual number of hosts with licensed consumed that in the IU is called "Subscriptions consumed" . I have not found the way to get that data, to make graphs of the comparison..

Issue Type
Feature Idea

Component Name
Metrics

Thanks in advanced!