private VerifiableProperties getVerifiableProperties() {
    Properties properties = new Properties();
    properties.setProperty("router.hostname", "localhost");
    properties.setProperty("router.datacenter.name", "DC1");
    properties.setProperty("clustermap.cluster.name", "test");
    properties.setProperty("clustermap.datacenter.name", "DC1");
    properties.setProperty("clustermap.host.name", "localhost");
    properties.setProperty("clustermap.port", "1666");
    properties.setProperty("clustermap.resolve.hostnames", "false");
    properties.setProperty("kms.default.container.key", TestUtils.getRandomKey(32));
    return new VerifiableProperties(properties);
  }
Constructs and returns a VerifiableProperties instance with the defaults required for instantiating
any router.
@return the created VerifiableProperties instance.
ambry-router/src/test/java/com/github/ambry/router/RouterFactoryTest.java