Don't use SSL to connect to canary-backend
Don't use SSL to connect to canary-backend

There's no particular reason to use SSL to connect to the canary-backend, and
for the moment this simplifies configuration of the canary across
environments.

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