kill: Sleep before sending a signal
kill: Sleep before sending a signal

We have to let the container start and process the trap before
sending it the expected signal.

Fixes #534

Signed-off-by: Samuel Ortiz <0ba86cb3f08bbb861958e54bd3438887adb4263c@linux.intel.com>

MarioCarrilloA/tests,chavafg/tests,clearcontainers/tests,MarioCarrilloA/tests,clearcontainers/tests,devimc/tests,devimc/tests,chavafg/tests