Merge branch '3.2' into 3.3

* 3.2:
  [Form][FrameworkBundle] Remove non-existing arg for data_collector.form
  [Cache] fix Redis scheme detection

Author: nicolas-grekas

Resources/config/form_debug.xml

@@ -26,7 +26,6 @@
         <service id="data_collector.form" class="Symfony\Component\Form\Extension\DataCollector\FormDataCollector" public="true">
             <tag name="data_collector" template="@WebProfiler/Collector/form.html.twig" id="form" priority="310" />
             <argument type="service" id="data_collector.form.extractor" />
-            <argument>false</argument>
         </service>
     </services>
 </container>