by default start bullet list at second level
use stBulletLvl parameter to change this behaviour

Change-Id: I5084e7bf1902fdca83bea6d57a8c1f37dd2e65be
Reviewed-on: https://gerrit.libreoffice.org/73440
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>