SAK-25862 Set default permissions for signup tool on new DBs.

This sets up the default permissions for signup tool when a clean database is used. It doesn't grant any of the optional permissions listed on the signup setup page.

git-svn-id: https://source.sakaiproject.org/svn/kernel/trunk@307330 66ffb92e-73f9-0310-93c1-f5514f145a0a