At first sight, I imagined a 'superadmin' user, above 'admin'. However, many files, specially policies () need to be modified, because 'admin' role supersedes tenant roles. So, instead of a complex solution, a better one (as it seems to me): create a simple role,  (based on ) and modify Dashboard panels permissions.
Merge branch 'master' of https://github.com/boidacarapreta/openstack-ifsc