Description of problem:
Issue when using ldap + idm + user group with nisgroup

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

How reproducible:
100% in the customer env

Steps to Reproduce:
1. Setup ldap pointing to idm
2. Setup usergroup
3.

Actual results:
The usergroup it's not working as expected

Expected results:
Work as expected when setting usergroup + nisgroup

Additional info:
When using a regular group, the usergroup feature works as expected