Terry Wilson c84480dfc2 Ensure get_pid_to_kill works with rootwrap script
To ensure that correct process is killed when using a rootwrap
script, we must recursively list the children of our top-level
process and kill the last one. This patch uses the psutil python
module which is already used in the heat-cfntools project.

Change-Id: I702bb9dd794c08fcaab637284ee303de1778cbb9
2013-11-20 09:57:23 -06:00
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