void shutdown() {
        try {
            executor.shutdownNow();
            executor.awaitTermination(10, TimeUnit.SECONDS);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        }
    }
Reports server/connector specific metrics for Jdisc and Jetty

@author bjorncs
container-core/src/main/java/com/yahoo/jdisc/http/server/jetty/ServerMetricReporter.java