s3:winbindd: don't remove the DOMAIN\ prefix for principals of our own domain as AD DC
This also matches the behaviour of the source4/winbind code.
In Samba 4.0 and 4.1 we had the following
> getent passwd administrator
S4XDOM\Administrator:*:0:100::/home/S4XDOM/Administrator:/bin/false
> getent passwd S4XDOM\\administrator
S4XDOM\Administrator:*:0:100::/home/S4XDOM/Administrator:/bin/false
With Samba 4.2.0 we have:
> getent passwd administrator
administrator:*:0:100::/home/S4XDOM/administrator:/bin/false
> getent passwd S4XDOM\\administrator
administrator:*:0:100::/home/S4XDOM/administrator:/bin/false
With the patches we have:
> getent passwd administrator
S4XDOM\administrator:*:0:100::/home/S4XDOM/administrator:/bin/false
> getent passwd S4XDOM\\administrator
S4XDOM\administrator:*:0:100::/home/S4XDOM/administrator:/bin/false
Bug: https://bugzilla.samba.org/show_bug.cgi?id=11183
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>