Stop the kill test if spawn fail.
Stop the kill test if spawn fail.

Change-Id: Ifda2b6b3dd27f3e72097ff443b032b9fc0db3963
Reviewed-on: http://gerrit.aldebaran.lan:8080/3127
Reviewed-by: proullon <ffff9135679d397f48dd743107119b1f6fc32d3d@aldebaran-robotics.com>
Tested-by: proullon <ffff9135679d397f48dd743107119b1f6fc32d3d@aldebaran-robotics.com>

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