The micrometer subsystem pushes signals to an OpenTelemetry Collector using OTLP over HTTP. Pushing over HTTPS would increase the security of the data by preventing snooping. To enable that, we need to be able to validate the servers certificate, so the server needs to know about that. Similarly, to prevent unwanted connections to the server, we can also specify a client certificate (and key) that the Collector could use to validate the client connection. These are both supported by the underlying transport libraries, but are not configurable on the server. The micrometer configuration should be extended to enable these to be specified.