Reduce log buffer flush to notice in debug mode.
Reduce log buffer flush to notice in debug mode.

In debug mode, it is expected that there's no buffer to flush, as in
debug mode as much information as possible should be logged.

thijskh/OpenConext-engineblock,thijskh/OpenConext-engineblock,thijskh/OpenConext-engineblock,thijskh/OpenConext-engineblock