Telegraf: Add support for separate listening ports in service.yaml

Telegraf values should support designating separate listening ports in the service to accommodate, for example, standard HTTP/HTTPS ports

Start by locating the Telegraf chart's service.yaml and the values that configure its service ports. Determine how separate HTTP and HTTPS listening ports should be represented, then validate the chart rendering; done means the service supports distinct ports for those protocols.

Written by the indexing model from the issue text.