[FEATURE] Secure connections to Redfish APIs end-to-end

[starbops]

Is your feature request related to a problem? Please describe.

Some might not want to add an ingress controller to their K8s cluster. They can manually have kube-vip deployed and modify each of the virtbmc Cluster-type Services they want to expose externally to become the LoadBalancer-type, much like #3 described. Nevertheless, the connection will be plain text (regarding Redfish). As a result, we need to take care of these people and enable KubeVirtBMC's agent to handle HTTPS connections directly. That is to say, users can expose Redfish APIs through LoadBalancer-type Services externally without needing an ingress controller, and the connections are fully encrypted, end to end.

Describe the solution you'd like

The Redfish emulator should be able to handle HTTPS connections natively, which implies managing its key and certificate.

Describe alternatives you've considered

Access the APIs through an ingress controller, much like we do currently.

Additional context

This is also one of the remaining items from #2.