UI - test console cleanup (#6674)

* add ember-cli-deprecation-workflow

* this._router in routes to quiet deprecation

* mark style bindings as htmlSafe strings

* simplify authenticate service hook with async fn

* don't serialize aliases relationship on entities

* update ember-test-selectors so we can use supportsDataTestProperties

* allow duplicate flash messages because we don't want a log warning

* update ember-concurrency for better error message

* use ember-qunit instead of ember-cli-qunit

* update ember-cli-page-object so we're not using a beta lol

* ignore test-helper jquery context warning

* fix race condition in pgp-file test by using ember-concurrency task and test waiter

* await cli commands

* fail tests if async leakage is detected

* update auth-jwt component and tests to be simpler

* fix linting

* review feedback

ui/config/deprecation-workflow.js

@@ -0,0 +1,11 @@
+/* global self */
+self.deprecationWorkflow = self.deprecationWorkflow || {};
+self.deprecationWorkflow.config = {
+  workflow: [
+    // ivy-codemirror and ember-radio-button still use send-action
+    { handler: 'silence', matchId: 'ember-component.send-action' },
+    { handler: 'silence', matchId: 'ember-runtime.deprecate-copy-copyable' },
+    // ember-cli-page-object uses jquery's this.$() by default - this will change when we remove jquery
+    { handler: 'silence', matchId: 'ember-test-helpers.rendering-context.jquery-element' },
+  ],
+};