Description of problem:

When creating a user with a viewer role, the same can't see any hostgroup, instead, the page presents error

How reproducible:

100%

Is this issue a regression from an earlier version:

Testing, I got this behavior on 6.13 and 6.14, in 6.15 it's working as expected.

Steps to Reproduce:

1. Install Satellite

2. Create a hostgroup as admin

3. Create a new user, set the role of viewer

4. Log as user and try to access the hostgroup page

Actual behavior:
Error

Expected behavior:
Be able to see the hostgroup

Business Impact / Additional info: