[RHEL/6] Fix no_unpackaged_sgid_files /bin/cgclassify executable false positive
Merge pull request #327 from iankko/rhel6_whitelist_cgclassify_executable

[bugfix] [RHEL/6]  Whitelist /bin/cgclassify executable coming from libcgroup RPM to fix no_unpackaged_sgid_files false positive