Ability to handle different exposure levels of actuator endpoints

[Idane]

Actuator endpoints can reveal more or less information depending on configuration. We need to be able to detect this and display things accordingly. /health example when exposed: {"status":"UP","components":{"db":{"status":"UP","details":{"database":"MySQL","validationQuery":"isValid()"}},"discoveryComposite":{"description":"Discovery Client not initialized","status":"UNKNOWN","components":{"discoveryClient":{"description":"Discovery Client not initialized","status":"UNKNOWN"}}},"diskSpace":{"status":"UP","details":{"total":133003395072,"free":27105759232,"threshold":10485760,"exists":true}},"livenessState":{"status":"UP"},"ping":{"status":"UP"},"rabbit":{"status":"UP","details":{"version":"3.11.2"}},"readinessState":{"status":"UP"},"refreshScope":{"status":"UP"}},"groups":["liveness","readiness"]}

When not exposed: {"status":"UP"}

Additionally some endpoints may be deliberately hidden, so all features should be toggle able based on what we can see

[Idane]

Partial implementation