[#68243876] Icinga use common Nginx SSL config
[#68243876] Icinga use common Nginx SSL config

To avoid duplication and pull in the cipher fix a23477e.

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