private void addConfigSentinel(DeployState deployState, HostResource host)
    {
        ConfigSentinel configSentinel = new ConfigSentinel(host.getHost(), deployState.getProperties().applicationId(), deployState.zone());
        addAndInitializeService(deployState, host, configSentinel);
        host.getHost().setConfigSentinel(configSentinel);
    }
Adds services to all hosts in the system.
config-model/src/main/java/com/yahoo/vespa/model/admin/Admin.java