s3:auth: base make_new_session_info_system() on auth_system_user_info_dc() and auth3_...

s3:auth: base make_new_session_info_system() on auth_system_user_info_dc() and auth3_create_session_info()

The changes in the resulting token look like this:

           unix_token               : *
               unix_token: struct security_unix_token
                   uid                      : 0x0000000000000000 (0)
                   gid                      : 0x0000000000000000 (0)
-                  ngroups                  : 0x00000000 (0)
-                  groups: ARRAY(0)
+                  ngroups                  : 0x00000001 (1)
+                  groups: ARRAY(1)
+                      groups                   : 0x0000000000000000 (0)

...

                   domain_name              : *
                       domain_name              : 'NT AUTHORITY'
                   dns_domain_name          : NULL
-                  full_name                : NULL
-                  logon_script             : NULL
-                  profile_path             : NULL
-                  home_directory           : NULL
-                  home_drive               : NULL
-                  logon_server             : NULL
+                  full_name                : *
+                      full_name                : 'System'
+                  logon_script             : *
+                      logon_script             : ''
+                  profile_path             : *
+                      profile_path             : ''
+                  home_directory           : *
+                      home_directory           : ''
+                  home_drive               : *
+                      home_drive               : ''
+                  logon_server             : *
+                      logon_server             : 'SLOWSERVER'
                   last_logon               : NTTIME(0)
                   last_logoff              : NTTIME(0)
                   acct_expiry              : NTTIME(0)
                   last_password_change     : NTTIME(0)
                   allow_password_change    : NTTIME(0)
                   force_password_change    : NTTIME(0)
                   logon_count              : 0x0000 (0)
                   bad_password_count       : 0x0000 (0)
-                  acct_flags               : 0x00000000 (0)
+                  acct_flags               : 0x00000010 (16)
                   authenticated            : 0x01 (1)
           unix_info                : *

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13328

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit e8402ec0486ced6ac2adb640c61a9e5abc77d4e4)