cgroups/cpuacct_setup: fix task_kill() search for process

1. "i* in "grep cpuacct_taski*" seems pointless as its target is cpuacct_task01

2. using cut fails when ps indents the output as following:
99 cpuacct_task01
112 cpuacct_task01
1111 cpuacct_task01

---
 .../kernel/controllers/cpuacct/cpuacct_setup.sh    |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

index 47cd1da..2443a28 100755
@@ -58,7 +58,7 @@ cleanup ()
 }
 task_kill ()
 {
-	for i in `ps -e | grep cpuacct_taski* | cut -d" " -f1`
+	for i in `ps -e | grep cpuacct_task | awk '{print $1}'`
 	do
 		kill -SIGUSR1 $i
 	done

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