@Override
	protected void deployModules(Container container) throws Exception {
		deployUnallocatedStreamModules();
		deployUnallocatedJobModules();
	}
Handle the arrival of a container. This implementation will scan the
existing streams/jobs and determine if any modules should be deployed to
the new container.

@param container the arriving container
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/server/admin/deployment/zk/ContainerMatchingModuleRedeployer.java