static ClusterMapConfig getDummyConfig() {
    Properties props = new Properties();
    props.setProperty("clustermap.host.name", "localhost");
    props.setProperty("clustermap.cluster.name", "cluster");
    props.setProperty("clustermap.datacenter.name", "");
    props.setProperty("clustermap.resolve.hostnames", "false");
    return new ClusterMapConfig(new VerifiableProperties(props));
  }
For use when the the actual values in {@link ClusterMapConfig} are unimportant.
@return a {@link ClusterMapConfig} with some default values.
ambry-clustermap/src/test/java/com/github/ambry/clustermap/TestUtils.java