New binlog router should clearly says that it does not file/pos based options in CHANGE MASTER

Maxscale 2.5 binlog router no longer supports file/position based replication, only GTID based. So its CHANGE MASTER command does not support MASTER_LOG_FILE and MASTER_LOG_POS settings anymore either, which is understandable.

When trying to use these, one only gets back

ERROR 1064 (42000): In line 1:

Error! Expecting `end of input`:

instead of a clear message stating that these options, while valid with CHANGE MASTER in other contexts, is not supported by the new binlog router.

Expected result: something like:

ERROR 1064 (42000): In line 1:

Error! Binlog router only supports GTID based replication, so MASTER_LOG_FILE and MASTER_LOG_POS options are no longer supported