HPCC-12664 global name 'eclfile' is not defined

Add fix to handle missing file problem.

Restore the default timeout to 720 sec.

Signed-off-by: Attila Vamos <attila.vamos@gmail.com>
Merge pull request #6712 from AttilaVamos/HPCC-12664-fix

HPCC-12664 global name 'eclfile' is not defined

Reviewed-by: Gavin Halliday <ghalliday@hpccsystems.com>