private static void writeServicesXml(Path applicationPath, String servicesXml) throws IOException {
        Path path = applicationPath.resolve("services.xml");
        List<String> output = List.of("<?xml version=\"1.0\" encoding=\"utf-8\"?>", servicesXml);
        Files.write(path, output, StandardCharsets.UTF_8);
    }
Creates a local application from vespa-services fragments.

@author Tony Vaagenes
@author ollivir
standalone-container/src/test/java/com/yahoo/container/standalone/StandaloneContainer.java