[Enhancement] [RHEL/6] mount_option_nosuid_removable_partitions rule:
* enhance OVAL check to also test if expected removable partition / device
truly exists on the underlying system. If not, allow the check to pass
(since in that case there's nothing to check 'nosuid' option to be present at),
* couple of small cosmetic changes to the OVAL check (id= to be first attribute,
version= the last, re-order objects definitions, add blank rows for better overall
check readability etc.)