ci: added listener to LAVA backend
ci: added listener to LAVA backend

LAVA supports ZMQ publisher sockets where it sends the data about all
events in the instance. Listener can connect to this socket and filter
the messages about the test jobs that it follows.

Signed-off-by: Milosz Wasilewski <a39812e55748be210556797addcf4c064734f1bf@linaro.org>

terceiro/squad,terceiro/squad,terceiro/squad,terceiro/squad