public static void populateRequiredRouterProps(Properties props) {
    props.setProperty("router.hostname", "localhost");
    props.setProperty("router.datacenter.name", "localDC");
    props.put("clustermap.cluster.name", "dev");
    props.put("clustermap.datacenter.name", "localDC");
    props.put("clustermap.host.name", "localhost");
  }
Set dummy values for the required {@link RouterConfig} properties for use in tests.
@param props the {@link Properties} to set the required configs in.
ambry-test-utils/src/main/java/com/github/ambry/commons/CommonTestUtils.java