Update Logstash resource dependencies
Update Logstash resource dependencies

Try using a `require` instead of `before` to make sure the logstash jar
is present in disk before the class is implemented.

alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet