@Override
    public void verifyHosts(ApplicationId applicationId, Collection<String> newHosts) {
        hostRegistry.verifyHosts(applicationId, newHosts);
    }
Given baseIdSegment search/ and id search/container/default.0, return search/container
@return id segment with one extra level from the id appended
configserver/src/main/java/com/yahoo/vespa/config/server/application/TenantApplications.java