openssl pkcs12 export leaks password

[jdwhited]

If the pkcs12 export fails or is debugged in puppet the password leaks.

Suggesting to set command as Sensitive

command => Sensitive(inline_template('<%= @cmd.join(" ") %>')),

https://github.com/camptocamp/puppet-openssl/blob/master/manifests/export/pkcs12.pp#L51

Thanks!