Core data

• Health check logging events
  • data.core.v2alpha.HealthCheckEvent
  • data.core.v2alpha.HealthCheckEjectUnhealthy
  • data.core.v2alpha.HealthCheckAddHealthy
  • data.core.v2alpha.HealthCheckFailure
  • data.core.v2alpha.DegradedHealthyHost
  • data.core.v2alpha.NoLongerDegradedHost
  • Enum data.core.v2alpha.HealthCheckFailureType
  • Enum data.core.v2alpha.HealthCheckerType