Removed useless output from cfengine3 init script

Lack of >/dev/null in ps --help command caused useless output of

```
     --cols, --columns, --width <num>
```

when running /etc/init.d/cfengine3 for any command.

Ticket: ENT-13234
Changelog: title

Author: craigcomstock

misc/init.d/cfengine3.in

@@ -150,7 +150,7 @@ fi
 CURRENT_PS_UID=__none__
 INSIDE_CONTAINER=-1
 
-if ps --help 2>/dev/null | egrep -e '--cols\b' > /dev/null || ps --help output 2>/dev/null | egrep -e '--cols\b'; then
+if ps --help 2>/dev/null | egrep -e '--cols\b' > /dev/null || ps --help output 2>/dev/null | egrep -e '--cols\b' > /dev/null; then
     # There is a bug in SUSE which means that ps output will be truncated even
     # when piped to grep, if the terminal size is small. However using --cols
     # will override it. NOTE: On Suse 12 and 15, `ps` mentions `--cols` only