Fix Intermittent Hangs In Recovery Tests

Update recovery script to exact match on target PID

Change-Id: I48d1f1a8c882e6f45d09c37df1c129463f2eaaf4
Reviewed-on: https://asterix-gerrit.ics.uci.edu/869
Reviewed-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: abdullah alamoudi <bamousaa@gmail.com>
diff --git a/asterixdb/asterix-events/src/main/resources/events/node_failure/nc_failure.sh b/asterixdb/asterix-events/src/main/resources/events/node_failure/nc_failure.sh
index 1dc0938..39a51db 100644
--- a/asterixdb/asterix-events/src/main/resources/events/node_failure/nc_failure.sh
+++ b/asterixdb/asterix-events/src/main/resources/events/node_failure/nc_failure.sh
@@ -25,10 +25,10 @@
 PID=`echo $PID_INFO | cut -d " " -f2`
 kill -15 $PID
 
-cmd_output=$(jps|grep $PID)
+cmd_output=$(jps|grep "^$PID\s")
 while [ ${#cmd_output} -ne 0 ]
 do
   sleep 1
   kill -15 $PID
-  cmd_output=$(jps|grep $PID)
+  cmd_output=$(jps|grep "^$PID\s")
 done