Do not use attr_maps defaults when some are provided in the config

zmldapsync/zmldapsync.pl

@@ -968,5 +968,10 @@ sub get_default_conf {
       }
     };
   }
+  # If some attribute mapping is defined in the provided conf
+  # do not use defaults
+  foreach my $type ( qw( users groups ) ) {
+    $defaults->{$type}->{attr_map} = {} if ( defined $conf->{$type}->{attr_map} );
+  }
   return merge $defaults, $conf;
 }