Ticket 49194 - Lower default ioblock timeout
Bug Description: The default ioblock timeout is very high: 30
minutes. This often results in hangs and other odd symptoms.
Fix Description: Reduce the time to 10 minutes, and then
step it down further in the future.
https://pagure.io/389-ds-base/issue/49194
Author: wibrown
Review by: mreynolds (Thanks!)