Rewrite test_event to reduce its flakyness
Rewrite test_event to reduce its flakyness

Add a fixture.
Remove hard-coded insufficient timeouts that can fail when testing under high
CPU load.

Change-Id: Ie75d66f00cf853f4a9a45715a705ea9efbc4a540
Reviewed-on: http://gerrit.aldebaran.lan/53054
Reviewed-by: tfontenay <c24d15a4b18b5a000d37b3d79586313e143f61c8@aldebaran-robotics.com>
Tested-by: gerrit
Reviewed-by: pdaouadi <fc1eb3334d3fdad315bae23aa166bc70bd434067@aldebaran-robotics.com>
Tested-by: pdaouadi <fc1eb3334d3fdad315bae23aa166bc70bd434067@aldebaran-robotics.com>

aldebaran/libqi,bsautron/libqi,aldebaran/libqi,vbarbaresi/libqi,aldebaran/libqi