I have seen the configuration com.adobe.granite.packages.hc.impl.InstalledPackageHealthCheck in AEM 6.0. Am really not sure about this health check functionality. But can someone tell me how this can be acheived in AEM 6.4?
Another example - Proactive Monitoring of AEM in Adobe Managed Services with Sling Health Checks | Perficient Digital
Are you referring to this:
Apache Sling :: Sling Health Check Tools