[BugFix] [RHEL/6] mountopt_nosuid_on_removable_partitions rule:
* Unify XCCDF id with OVAL id,
* fix OVAL check not to return an error as result (use proper
"var_removable_partition" passed variable name instead of
"nosuid_removable_media"),

Also fix yet one occurrence of 'nodev_var_removable_partition'
variable I forgot to fix in previous patch.