Enable anonymous grafana access
Enable anonymous grafana access

We're not using authentication for access to Grafana in any serious
way so allow anonymous access. Grafana is only accessible within the
local network.

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