title: How to specify custom health check registry in spring boot (application.yml)
body: <p>Is it possible to inject a custom <code>com.codahale.metrics.health.HealthCheckRegistry</code>in a spring boot application using the property <code>spring.datasource.hikari.health-check-registry</code> in application.yml ?  And how to do that?</p>
  
  <pre><code>spring:
    datasource:
      driver-class-name: com.microsoft.sqlserver.jdbc.SQLServerDriver
      url: jdbc:sqlserver://localhost:1433;databaseName=mydb;failoverPatner=
      username: db_user
      password: db_pass
      hikari:
        data-source-properties:
          cachePrepStmts: true
          prepStmtCacheSize: 250
        health-check-registry: ???????
      jmx-enabled: true
  </code></pre>