[SB2] Configmap booster is using different health check then other boosters

https://github.com/jboss-fuse/fuse-configmap-booster/blob/redhat-sb2/src/main/resources/application.properties is using different healthcheck (defaults with /acutator/health). Can we align that ?

It is harder to find the root cause of failure then, and when all boosters are failing, it just multiply the complexity of the whole.