[Samba] Get the reverse zone working

[matti.kaupenjohann]

> Do you have the Administrator password ?
> If so use that with '-Uadministrator' before the '-d0' 
I have the administrator password which was not very complex since the 
system was installed only for testing and I remember that the password 
worked last time I used -Uadministrator it seems I am out of luck. Since 
I was not that deep into the process it will not be the biggest lost to 
reset. But I am absolutly not shure where it break.

I give a feedback after I reached the same point as last time.