HPCC-11640 Use new --exception-level=warning option to ignore extra logging

Add new option to generated command

Strip <Info> lines from key files.

Signed-off-by: Attila Vamos <attila.vamos@gmail.com>
HPCC-11640 Use new --exception-level=warning option to ignore extra logging

Update after review

Signed-off-by: Attila Vamos <attila.vamos@gmail.com>
Merge pull request #6058 from AttilaVamos/HPCC-11640-fix

HPCC-11640 Use new --exception-level=warning option to ignore extra logging

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>