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The Keystone  SQL upgrade tests are not currently run against PostgreSQL 
or MySQL.  As such, they have bit-rotted and no long run successfully.  
Before we approave any more SQL upgrade script changes we need to fix this.

If you don't know how to run these:

use devstack to set up mysql. Run it again to set up postgresql. BLank 
out the keystoen database in each with the appropriate drop/create db 
commands.


uncomment the database URL in your tests/backend_sql.conf file and run

  ./run_tests.sh -N test_sql_upgrade