update vagrant ansible role to upgrade database
    
    Previously, the vagrant config did not upgrade the database
    when provisioning the new machine. This could lead to issues
    if a database change was commited to master, and we pull the
    dbdump from prod.
    
    This change copies the alembic.ini from the utility directory,
    changes the dburl to what the vagrant setup expects, and runs
    the alembic upgrade command.