Revert change to not hardcode any plugin list (as nobody would remember to...

Revert change to not hardcode any plugin list (as nobody would remember to update those when we add plugins)

core/Plugin/Manager.php

@@ -72,60 +72,17 @@ class Manager extends Singleton
         'LeftMenu'
     );
 
-    public static $pluginsToLoadForTests = array(
-        "CorePluginsAdmin",
-        "CoreAdminHome",
-        "CoreHome",
-        "Proxy",
-        "API",
-        "Widgetize",
-        "Transitions",
-        "LanguagesManager",
-        "Actions",
-        "Dashboard",
-        "MultiSites",
-        "Referrers",
-        "UserSettings",
-        "Goals",
-        "SEO",
-        "UserCountry",
-        "VisitsSummary",
-        "VisitFrequency",
-        "VisitTime",
-        "VisitorInterest",
-        "ExampleAPI",
-        "ExamplePlugin",
-        "ExampleRssWidget",
-        "Provider",
-        "Feedback",
-        "Login",
-        "UsersManager",
-        "SitesManager",
-        "Installation",
-        "CoreUpdater",
-        "ScheduledReports",
-        "UserCountryMap",
-        "Live",
-        "CustomVariables",
-        "PrivacyManager",
-        "ImageGraph",
-        "Annotations",
-        "MobileMessaging",
-        "Overlay",
-        "SegmentEditor",
-        "DevicesDetection",
-        "DBStats",
-        'ExampleUI',
-        "TasksTimetable",
-        "Morpheus",
-        "Zeitgeist",
-        "CustomAlerts",
-        "VisitorGenerator",
-        "SecurityInfo",
-        "ExampleSettingsPlugin",
-        "TreemapVisualization",
-        "Events"
-    );
+    public static function getPluginsToLoadDuringTests()
+    {
+        $manager = \Piwik\Plugin\Manager::getInstance();
+        $toLoad = array();
+        foreach($manager->readPluginsDirectory() as $plugin) {
+            if($manager->isPluginBundledWithCore($plugin)) {
+                $toLoad[] = $plugin;
+            }
+        }
+        return $toLoad;
+    }
 
     public function getCorePluginsDisabledByDefault()
     {

tests/PHPUnit/IntegrationTestCase.php

@@ -238,7 +238,7 @@ abstract class IntegrationTestCase extends PHPUnit_Framework_TestCase
 
     protected static function getPluginsToLoadDuringTests()
     {
-        return \Piwik\Plugin\Manager::$pluginsToLoadForTests;
+        return \Piwik\Plugin\Manager::getInstance()->getPluginsToLoadDuringTests();
     }
 
     public function setUp()

tests/PHPUnit/TestingEnvironment.php

@@ -46,7 +46,7 @@ class Piwik_TestingEnvironment
 
             $config->setTestEnvironment();
 
-            $pluginsToLoad = \Piwik\Plugin\Manager::$pluginsToLoadForTests;
+            $pluginsToLoad = \Piwik\Plugin\Manager::getInstance()->getPluginsToLoadDuringTests();
             $config->Plugins = array('Plugins' => $pluginsToLoad);
 
             $trackerPluginsToLoad = array(