Expose HealthIndicator name via interface

[aajnh]

Feature description

We would like to get the name of the HealthIndicator without having to subscribe to it.
We are finding the default classification of /health/readiness HealthIndicators when wired as a container readiness probe to be incorrectly escalating general health indicators to critical health indicators. We therefore want to control which HealthIndicator get reported under which custom probe endpoint. We have a pattern, but it needs the name of the HealthIndicator to be available during endpoint construction / initialisation.

Proposal is to create a default String getName() implementation on the HealthIndicator endpoint and add the @nAmed interface to the provided HealthIndicator implementations.