[SSSD] [sssd PR#532][synchronized] TESTS: Fix E501 pep8 issues on test_netgroup.py

[fidencio]

   URL: https://github.com/SSSD/sssd/pull/532
Author: fidencio
 Title: #532: TESTS: Fix E501 pep8 issues on test_netgroup.py
Action: synchronized

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/532/head:pr532
git checkout pr532