Title: #120: GPO: Skip GPOs without gPCFunctionalityVersion
We falsely stopped GPO processing when Group Policy Container
in AD did not contain gPCFunctionalityVersion. Such GPOs
should be ignored by SSSD.
To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/120/head:pr120
git checkout pr120