[Samba] Samba 4.4.2 "samba-tool ntacl sysvolreset" is not working correctly

[Miguel Medalha]

> (...) The affected policies are always "Default Domain Policy" and 
> "Default Domain Controllers Policy".

The order of events is the following:

- Restore sysvol from backup
- Run sysvolcheck. The only policy giving error is "Default Domain 
Controllers Policy"
- Run sysvolreset
- Run sysvolcheck again. The only policy giving error is "Default Domain 
Policy". The first one does not give error anymore.

This is consistent, always happening as described.