Investigate `find` inside io-500

Find tries to list the number of files that are created after a "touch timestamp".

Normally it checks all the files, as we have disabled time properties by default... However, after activating them, the result is the same.

Another issue, is that "touch" which was an alias for LD_PRELOAD=$GKFS_PRLD touch, is not captured correctly inside io500_fixed.sh so it needs manual modification.