build(aio): move test config and e2e tests into subfolders (#21763)

This is in preparation of putting firebase and service worker
deployment tests into the project.

PR Close #21763

aio/src/karma.conf.js

@@ -0,0 +1,43 @@
+// Karma configuration file, see link for more information
+// https://karma-runner.github.io/0.13/config/configuration-file.html
+
+module.exports = function (config) {
+  config.set({
+    basePath: '',
+    frameworks: ['jasmine', '@angular/cli'],
+    plugins: [
+      require('karma-jasmine'),
+      require('karma-chrome-launcher'),
+      require('karma-jasmine-html-reporter'),
+      require('karma-coverage-istanbul-reporter'),
+      require('@angular/cli/plugins/karma')
+    ],
+    client:{
+      clearContext: false // leave Jasmine Spec Runner output visible in browser
+    },
+    files: [
+      { pattern: './node_modules/@angular/material/prebuilt-themes/indigo-pink.css', included: true }
+    ],
+    coverageIstanbulReporter: {
+      reports: [ 'html', 'lcovonly' ],
+      fixWebpackSourcePaths: true
+    },
+    angularCli: {
+      environment: 'dev'
+    },
+    reporters: ['progress', 'kjhtml'],
+    port: 9876,
+    colors: true,
+    logLevel: config.LOG_INFO,
+    autoWatch: true,
+    browsers: ['CustomChrome'],
+    browserNoActivityTimeout: 60000,
+    singleRun: false,
+    customLaunchers: {
+      CustomChrome: {
+        base: 'Chrome',
+        flags: process.env.TRAVIS && ['--no-sandbox']
+      }
+    }
+  });
+};