The Operator provides a few default tags for Jaeger Agents when they are deployed as auto-injected side-cars.

Since a Pod is limited to a single host, it'd be useful to inject the 'ip' tag the same way. This would make life much simpler for non-Jaeger clients (such as the OpenCensus exporter) and saves having to include code to discover the hostIP in every k8s-hosted client, since the default IP for the networking stack is almost certainly for the container's network namespace, not the actual host IP.

This would help alleviate jaegertracing/jaeger#1459 by ensuring that at-least such Pods do not get false results from the Clock Skew Adjuster because they are seen as different hosts, even though they are different pods on the same hardware.

This probably isn't trivial hard, I believe this requires that the Jaeger Agent container have an env-var populated from its status.hostIP, and then that can be passed through via the command-line.