private static Properties getPropertiesFromFile(File file) throws IOException {
        Properties properties = new Properties();
        try (FileReader reader = new FileReader(file)) {
            properties.load(reader);
        }
        return properties;
    }
Integration tests for {@link ExportPackages}.

@author gjoranv
jdisc_core/src/test/java/com/yahoo/jdisc/core/ExportPackagesIT.java