Add a Grafana dashboard for NGinx logs
Add a Grafana dashboard for NGinx logs

This has been exported from Grafana, then the options for the templated
variables manually removed.

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