t: gws: expect ZMQ events in new-group-device tests
t: gws: expect ZMQ events in new-group-device tests

It is now possible to check which devices have been accepted or refused.

Signed-off-by: Jan Viktorin <3eab6ac54c005c4408f608556a6663b7f2abede7@fit.vutbr.cz>

BeeeOn/server,BeeeOn/server,BeeeOn/server,BeeeOn/server