python qibuild.command.check_output now raise CommandFailedException
python qibuild.command.check_output now raise CommandFailedException

Change-Id: I7279552944257bfdedddb68985673a44b28015c3
Reviewed-on: http://gerrit.aldebaran.lan:8080/4233
Reviewed-by: smartin <edaf33f3e53483e687d304aa81a03bb5a17b9ddf@aldebaran-robotics.com>
Tested-by: smartin <edaf33f3e53483e687d304aa81a03bb5a17b9ddf@aldebaran-robotics.com>

dmerejkowsky/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,aldebaran/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild