@BeforeEach
    public void setupFilterChains() {
        http = new HttpBuilder(Set.of()).build(root.getDeployState(), root, servicesXml());
        root.freezeModelTopology();
    }
@author gjoranv
@author Tony Vaagenes
@since 5.1.26
config-model/src/test/java/com/yahoo/vespa/model/container/http/FilterChainsTest.java