fold sysinfo into network

the backends are network backends

src/network/noop.js

@@ -0,0 +1,34 @@
+'use strict';
+
+exports = module.exports = {
+    getIPv4,
+    getIPv6,
+    testIPv4Config,
+    testIPv6Config
+};
+
+const assert = require('assert');
+
+async function getIPv4(config) {
+    assert.strictEqual(typeof config, 'object');
+
+    return null;
+}
+
+async function getIPv6(config) {
+    assert.strictEqual(typeof config, 'object');
+
+    return null;
+}
+
+async function testIPv4Config(config) {
+    assert.strictEqual(typeof config, 'object');
+
+    return null;
+}
+
+async function testIPv6Config(config) {
+    assert.strictEqual(typeof config, 'object');
+
+    return null;
+}