beta: parsoid init script needs root

In 6dc57210 I added a sudo access to let jenkins-deploy user restart the
Parsoid daemon using 'parsoid' as user. Turns out init scripts need root
access :-/

This patch change the sudo_user permission from parsoid to root.

bug: 57233
Change-Id: I7fb1f2e5e106a19341e71a10bc45d55256ade17f