HPCC-11549 Convert other OPT warning messages to information

Signed-off-by: Gavin Halliday <gavin.halliday@lexisnexis.com>
Merge pull request #6124 from ghalliday/issue11549b

HPCC-11549 Convert other OPT warning messages to information

Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>