private static List<String> getComponents(Collection<ComponentSpecification> componentSpecs) {
        List<String> components = new ArrayList<>();
        for (ComponentSpecification spec : componentSpecs)
            components.add(spec.stringValue());
        return components;
    }
@author Tony Vaagenes
@author gjoranv

Generates config for a all the chains.
config-model/src/main/java/com/yahoo/vespa/model/container/component/chain/ChainsConfigGenerator.java