Fallback to insecure HTTPS if HTTP isn't available
The default veraison deployment demo configuration uses HTTPS for the verification API, and will refuse connections on HTTP. To be compatible with both HTTP and HTTPS verifiers, fall back to HTTPS if the default doesn't work.
Marked as draft because this requires TLS support in veraison/apiclient, which is present in the git but not released under a tagged version. Would it be possible to release a new apiclient version?