MAGETWO-90237: Bug fixing

Use _secure => true

Author: danmooney2

app/code/Magento/Ui/Component/Form/Element/DataType/Media/Image.php

@@ -72,7 +72,7 @@ public function prepare()
                 'config' => [
                     'maxFileSize' => $maxFileSize,
                     'mediaGallery' => [
-                        'openDialogUrl' => $this->getContext()->getUrl('cms/wysiwyg_images/index'),
+                        'openDialogUrl' => $this->getContext()->getUrl('cms/wysiwyg_images/index', ['_secure' => true]),
                         'openDialogTitle' => $this->getConfiguration()['openDialogTitle'] ?? __('Insert Images...'),
                         'initialOpenSubpath' => $this->getConfiguration()['initialMediaGalleryOpenSubpath'],
                         'storeId' => $this->storeManager->getStore()->getId(),