clusters.addHost("h1");
Host host = clusters.getHost("h1");
host.setIPv4("ipv4");
host.setIPv6("ipv6");
host.setOsType("centos5");
host.persist();
c1.setDesiredStackVersion(new StackId("HDP-0.1"));
clusters.mapHostToCluster("h1", "c1");
ConfigFactory configFactory = injector.getInstance(ConfigFactory.class);
Config config = configFactory.createNew(c1, "global",