lint:

. need to properly scope the variables, there is no dynamic scope, and there used to be a relative scope, but it was deprecated in puppet 3 and gone in 4

. fixed lines longer than 80 chars

. changed ensure => present to ensure => file, see: https://github.com/voxpupuli/puppet-lint-file_ensure-check

. changed variables assigned to empty string, see: https://github.com/voxpupuli/puppet-lint-empty_string-check