Description of problem:
similar to https://bugzilla.redhat.com/show_bug.cgi?id=1418297 but for users.


Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. Create User with tenant-administator role
2. Go to Users 

Actual results:
You can see users with super-administator role and with administator role

Expected results:
You should see only users without super-administator role and with administator role