Code review comment for lp:~louis/ubuntu/raring/apport/apport_kdump_blueprint

Modified according to review in trunk :

 * added -n to /etc/init/apport.conf
 * added a test to ./test/test_hooks.py
 * added clean up instructions in /etc/cron.daily/apport

Old behavior has been kept to allow for previous method to work if kdump-tools is not installed