We use an ExternalName service to forward traces to our application agnostic jaeger instance that we deploy in the observe namespace. We need this deployed in advance for train-ticket otherwise the pods will crash. When I made this change in the conductor, it broke all the other apps. @Saadmrp1038 pushed in a hotfix which showcases this bug: #541.

Conveniently though, train-ticket has a kubernetes job for setup, which is a convenient place to add the external name service.

This PR is also useful to see the initial jaeger changes.