DERBY-6203: Intermittent assert failure in StoredPage.initSlotTable()
when running upgrade tests on 10.9 branch

Make BasicSetup run tests in the same order each time. This makes it
less likely to hit DERBY-4577 by accident.

git-svn-id: https://svn.apache.org/repos/asf/db/derby/code/branches/10.9@1476094 13f79535-47bb-0310-9956-ffa450edef68