add subscribe for pub_sub
add send_message_after_reply_with_ack_test_
send_messages_after_ack_test_
add messages_before_reply_whithout_ack_test_
add monitor_demonitor_test_
add subscribe_unsubscribe_simple_test_
add subscribe_unsubscribe_simple_test_
add auto_unsubscribe_test_
add double_exchange_test_
add subscribers_counter_test_
add multiple_monitors_test_
add demonitor_test_
add msg_keys_test_
add complex_subscribers_number_test_
add reply test skeleton