minor symfony#16659 Added the renamed options of the collection type to the upgrade information (peterrehm)

This PR was merged into the 2.8 branch.

Discussion
----------

Added the renamed options of the collection type to the upgrade information

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Commits
-------

7aac273 Added the renamed options of the collection type to the upgrade information

Author: fabpot

UPGRADE-2.8.md

@@ -213,6 +213,14 @@ Form
        }
    }
    ```
+   
+ * The option "options" of the CollectionType has been renamed to "entry_options".
+   The usage of the option "options" is deprecated and will be removed in Symfony 3.0.
+
+ * The option "type" of the CollectionType has been renamed to "entry_type".
+   The usage of the option "type" is deprecated and will be removed in Symfony 3.0.
+   As a value for the option you should provide the fully-qualified class name (FQCN) 
+   now as well.
 
  * Passing type instances to `Form::add()`, `FormBuilder::add()` and the
    `FormFactory::create*()` methods is deprecated and will not be supported

UPGRADE-3.0.md

@@ -264,6 +264,12 @@ UPGRADE FROM 2.x to 3.0
        // ...
    }
    ```
+   
+ * The option "options" of the CollectionType has been renamed to "entry_options".
+
+ * The option "type" of the CollectionType has been renamed to "entry_type".
+   As a value for the option you must provide the fully-qualified class name (FQCN) 
+   now as well.   
 
  * The `FormIntegrationTestCase` and `FormPerformanceTestCase` classes were moved form the `Symfony\Component\Form\Tests` namespace to the `Symfony\Component\Form\Test` namespace.