[new feature] Zip file option for everyone can read permissions

[cliffe]

https://github.com/cliffe/SecGen/blob/3135bf46c728baba40646c20cb9db24559ed05e6/modules/vulnerabilities/unix/ctf/zip_file/manifests/init.pp#L12

Would be good to add a parameter so we can specify the file permissions -- so that we can have the option to drop the flag in / with permissions so all users can read the file.