MC-1364: Always Render Magento directives on Magento Storefront

- fix integration test after MAGETWO-88432

Author: irenelagno

app/code/Magento/PageBuilder/view/adminhtml/web/css/source/form/element/tinymce.css

@@ -7,28 +7,28 @@
     font-family: "Open Sans";
     font-style: normal;
     font-weight: 300;
-    src: url('../../../../../fonts/opensans/light/opensans-300.woff2') format('woff2'), url('../../../../../fonts/opensans/light/opensans-300.woff') format('woff');
+    src: url('../../../../fonts/opensans/light/opensans-300.woff2') format('woff2'), url('../../../../fonts/opensans/light/opensans-300.woff') format('woff');
 }
 
 @font-face {
     font-family: "Open Sans";
     font-style: normal;
     font-weight: 400;
-    src: url('../../../../../fonts/opensans/regular/opensans-400.woff2') format('woff2'), url('../../../../../fonts/opensans/regular/opensans-400.woff') format('woff');
+    src: url('../../../../fonts/opensans/regular/opensans-400.woff2') format('woff2'), url('../../../../fonts/opensans/regular/opensans-400.woff') format('woff');
 }
 
 @font-face {
     font-family: "Open Sans";
     font-style: normal;
     font-weight: 600;
-    src: url('../../../../../fonts/opensans/semibold/opensans-600.woff2') format('woff2'), url('../../../../../fonts/opensans/semibold/opensans-600.woff') format('woff');
+    src: url('../../../../fonts/opensans/semibold/opensans-600.woff2') format('woff2'), url('../../../../fonts/opensans/semibold/opensans-600.woff') format('woff');
 }
 
 @font-face {
     font-family: "Open Sans";
     font-style: normal;
     font-weight: 700;
-    src: url('../../../../../fonts/opensans/bold/opensans-700.woff2') format('woff2'), url('../../../../../fonts/opensans/bold/opensans-700.woff') format('woff');
+    src: url('../../../../fonts/opensans/bold/opensans-700.woff2') format('woff2'), url('../../../../fonts/opensans/bold/opensans-700.woff') format('woff');
 }
 
 h1 {