We should migrate to the inventory package for v1/beta2 at https://github.com/project-kessel/inventory-client-python since relations api is being deprecated.

Code change in RBAC would be at these lines[ https://github.com/RedHatInsights/insights-rbac/blob/master/rbac/internal/views.py#L40-L42|https://github.com/RedHatInsights/insights-rbac/blob/master/rbac/internal/views.py#L41-L43]

and update settings.py & clowdapp.yml variables to use inventory naming and deploy-clowder.yml in app-interface to have stage inventory host.  Here: https://gitlab.cee.redhat.com/ecasey/app-interface/-/blob/rbac_stage_allow_kessel_network/data/services/insights/rbac/deploy-clowder.yml#L190