db-koji01: Some adjustments to avoid any outages
    
    Using the 'fix outage' clause in freeze here. ;)
    
    Basically adjust db-koji01 to use more memory and avoid
    saturating i/o. With these settings, page loads look faster
    and i/o is not saturated. We should try adding more cpus and such,
    but that will require a reboot, so avoiding for now.
    
    Signed-off-by: Kevin Fenzi <kevin@scrye.com>