Include a test for LRA context propagation across a "non-LRA aware" service

If a microservice A that wants to participate in an LRA and calls microservice B (which does not have specific LRA behaviour) and service A in turn calls microservice C (which does have specific LRA behaviour), then B should not need to be annotated with @LRA. A test is needed for this behaviour.

This issue relates to https://github.com/eclipse/microprofile-lra/issues/7