Scrapers should have an option to ignore certificate check failures

There should be an option to ignore certificate check failures (aka curl -k) for scraping

Originally mentioned in this community post - https://community.influxdata.com/t/what-is-my-scraper-status-and-other-scraper-options/10110

Start with the linked community post and compare the requested scraper behavior with curl's -k option. Trace where scraper options and certificate validation are handled, then verify that the new option lets scraping proceed despite certificate check failures without changing default verification behavior.

Written by the indexing model from the issue text.