feat(timeout): plumb a timeout option for HTTP requests (#339)

Fixes #328

examples/timeout.js

@@ -0,0 +1,30 @@
+/* eslint no-console:0 */
+//
+// Demonstrate how to set an HTTP request timeout.
+//
+const Client = require('../').Client;
+const config = require('../').config;
+
+async function main() {
+  try {
+    //
+    // Set a long timeout for HTTP requests of 30,000 milliseconds.
+    //
+    const timeout = 30000;
+    const client = new Client({
+      config: Object.assign(config.fromKubeconfig(), { timeout }),
+      version: '1.9'
+    });
+
+    //
+    // Get all the Namespaces.
+    //
+    const namespaces = await client.api.v1.namespaces.get();
+    console.log('Namespaces: ', namespaces);
+
+  } catch (err) {
+    console.error('Error: ', err);
+  }
+}
+
+main();

lib/request.js

@@ -102,13 +102,16 @@ class Request {
     this.requestOptions.ca = options.ca;
     this.requestOptions.cert = options.cert;
     this.requestOptions.key = options.key;
-    this.authProvider = {
-      type: null
-    };
-
     if ('insecureSkipTlsVerify' in options) {
       this.requestOptions.strictSSL = !options.insecureSkipTlsVerify;
     }
+    if ('timeout' in options) {
+      this.requestOptions.timeout = options.timeout;
+    }
+
+    this.authProvider = {
+      type: null
+    };
     if (options.auth) {
       this.requestOptions.auth = options.auth;
       if (options.auth.provider) {