sync: don't match the script PID when attempting to kill kubelet

roles/openshift_node_group/files/sync.yaml

@@ -132,7 +132,7 @@ spec:
                 echo "error: The downloaded node configuration is invalid, exiting" 2>&1
                 exit 1
               fi
-              if ! pgrep -U 0 -f 'hyperkube kubelet ' | xargs kill; then
+              if ! kill $(pgrep -U 0 -f '^/usr/bin/hyperkube kubelet ' | head -n1); then
                 echo "error: Unable to restart Kubelet" 2>&1
               fi
             fi