Another killfilter test fix for Fedora 17.
Another killfilter test fix for Fedora 17.

Updates killfilter test to use /usr/bin/sleep in addition to /bin/sleep.

Fixes LP Bug #1017585.

Change-Id: Ied0a8837fb0e7ca7fa3629859fbd67f71e5d80dc

n0ano/gantt,n0ano/gantt