Ticket 50329 - improve connection default parameters
    
    Bug Description: An issue was raised that appears that our default
    values may be misleading and hard to configure correctly in some
    circumstances. We should improve our default values to have better
    time sharing for connections.
    
    Fix Description: Improve ioblock to be shorter to prevent write
    blocks, make reads quicker for sharing, and by default have an
    idle disconnect to clients.
    
    https://pagure.io/389-ds-base/issue/50329
    
    Author: William Brown <william@blackhats.net.au>
    
    Review by: ???