flood.py quick clean-up
flood.py quick clean-up

 * reinitialize() before clean-up to forget about unsent messages
 * control sending flood messages by on_publish() to keep up

Signed-off-by: Nikita webconn Maslov <14f3cd4ce0a3279f06c9a2d0f83393b7635f277f@gmail.com>

contactless/mqtt-tools,contactless/mqtt-tools