The master reconnection change makes the second test faulty in
mxs359_error_on_write. After unblocking the master, the session will
reconnect to the master and the query will succeed.
Testing of routing behavior with master_failure_mode=error_on_write and
allow_master_changes=true. By sending an error instead of closing the
connection when the master fails, the connection can resume execution if a
new master becomes available.