Merge branch '2.8' into 3.4

* 2.8:
  Fix appveyor

src/Symfony/Component/Filesystem/Tests/FilesystemTest.php

@@ -161,6 +161,9 @@ class FilesystemTest extends FilesystemTestCase
      */
     public function testCopyForOriginUrlsAndExistingLocalFileDefaultsToCopy()
     {
+        if (!in_array('https', stream_get_wrappers())) {
+            $this->markTestSkipped('"https" stream wrapper is not enabled.');
+        }
         $sourceFilePath = 'https://symfony.com/images/common/logo/logo_symfony_header.png';
         $targetFilePath = $this->workspace.\DIRECTORY_SEPARATOR.'copy_target_file';