Support for AWS SigV4 proxy, setting K6_PROMETHEUS_RW_HEADERS_HOST has no effect on host header.

[Dogacel]

We are trying to use Prometheus export to an AWS-managed Prometheus instance. But this extension is currently not supporting AWS SigV4 signing.

• Support sigv4 to push metric to AWS managed prometheus #93

To overcome this issue, we are trying to set aws-sigv4-proxy GitHub Repo

This proxy uses host header to redirect request to. But unfortunately K6_PROMETHEUS_RW_HEADERS_HOST parameter is not setting any header.

I tested this both on Beeceptor and a local proxy server I wrote, I don't see the host header being overridden.

[codebien]

Hey! I'm closing this new issue as you linked another is already available for the same topic. We may pick it up soon considering the upvotes.