test_data: Add test ZODB and SQL dump for testUpgradeInstanceWithOldDataFs.

This test checks that an old instance can be upgraded successfully through
upgrader to the current ERP5 version.

Data.fs and dump.sql were created by the following command with erp5.git at
d8961c51 (just before the first filesystem Product to be migrated to ZODB
Components (ERP5ShortMessage)):
  runUnitTest --save testUpgradeInstanceWithOldDataFs