tests.py: match changes related to multiple IPC modules support
tests.py: match changes related to multiple IPC modules support

Adjust --ipc-modules command line argument and the path to the
ipc.zeromq.ZeromqIPC class so the tests are passing again.

Signed-off-by: Guillaume Tucker <e7e20b7c30f19d4ca6b81319ef81bf200369d137@collabora.com>

GENIVI/vehicle_signal_manager