Fix PropertyInfo extractor namespace in framework bundle

Author: jvasseur

Resources/config/property_info.xml

@@ -13,7 +13,7 @@
         </service>
 
         <!-- Extractor -->
-        <service id="property_info.reflection_extractor" class="Symfony\Component\PropertyInfo\ReflectionExtractor" public="false">
+        <service id="property_info.reflection_extractor" class="Symfony\Component\PropertyInfo\Extractor\ReflectionExtractor" public="false">
             <tag name="property_info.list_extractor" priority="-1000" />
             <tag name="property_info.type_extractor" priority="-1000" />
             <tag name="property_info.access_extractor" priority="-1000" />