mkexp: changed formatting of 'getconfig' to use the same settings as 'setconfig'

getconfig

@@ -34,10 +34,10 @@ try:
 except IOError as error:
     die("'{0}': {1}".format(error.filename, error.strerror))
 
-config_data = ConfigObj(update_data.get_config_file(), interpolation=False)
+config_data = ConfigObj(update_data.get_config_file(), interpolation=False,
+                        write_empty_values=True)
 for d in update_data.get_config_dicts():
     config_data.merge(d)
 
-config_data.indent_type = '  '
 config_data.write(sys.stdout)