The Newts API uses Dropwizard's Metrics package for keeping track of various statistics. We need to expose metrics in this registry via JMX.

When exposing the metrics via JMX, we should make sure they are prefixed with some sort of Newts specific namespace as to avoid clashes with other metrics exposed using a similar approach.

When using the Newts API, we currently initialize the MetricRegistry in 'applicationContext-newts.xml' (see the features/newts branch).

Success criteria:
We are able to query statistics about the 'search' timer via JMX - see org.opennms.newts.cassandra.search.CassandraSearcher for details.