bug symfony#23069 [SecurityBundle] Show unique Inherited roles in profile panel (yceruto)

This PR was merged into the 2.7 branch.

Discussion
----------

[SecurityBundle] Show unique Inherited roles in profile panel

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT

When more than one assigned role reaches the same inherited role then it's duplicated in the "Inherited roles" list.

The changes in the test case show the unexpected result before fix it:

```console
There was 1 failure:

1) Symfony\Bundle\SecurityBundle\Tests\DataCollector\SecurityDataCollectorTest::testCollectAuthenticationTokenAndRoles with data set #4 (array('ROLE_ADMIN', 'ROLE_OPERATOR'), array('ROLE_ADMIN', 'ROLE_OPERATOR'), array('ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'))
Failed asserting that Array &0 (
    0 => 'ROLE_USER'
    1 => 'ROLE_ALLOWED_TO_SWITCH'
    2 => 'ROLE_USER'
) is identical to Array &0 (
    0 => 'ROLE_USER'
    1 => 'ROLE_ALLOWED_TO_SWITCH'
)
```

Commits
-------

7061bfb show unique inherited roles

Author: fabpot

src/Symfony/Bundle/SecurityBundle/DataCollector/SecurityDataCollector.php

@@ -82,7 +82,7 @@ public function collect(Request $request, Response $response, \Exception $except
                 'token_class' => get_class($token),
                 'user' => $token->getUsername(),
                 'roles' => array_map(function (RoleInterface $role) { return $role->getRole(); }, $assignedRoles),
-                'inherited_roles' => array_map(function (RoleInterface $role) { return $role->getRole(); }, $inheritedRoles),
+                'inherited_roles' => array_unique(array_map(function (RoleInterface $role) { return $role->getRole(); }, $inheritedRoles)),
                 'supports_role_hierarchy' => null !== $this->roleHierarchy,
             );
         }

src/Symfony/Bundle/SecurityBundle/Tests/DataCollector/SecurityDataCollectorTest.php

@@ -111,13 +111,19 @@ public function provideRoles()
                 array('ROLE_ADMIN'),
                 array('ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'),
             ),
+            array(
+                array('ROLE_ADMIN', 'ROLE_OPERATOR'),
+                array('ROLE_ADMIN', 'ROLE_OPERATOR'),
+                array('ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'),
+            ),
         );
     }
 
     private function getRoleHierarchy()
     {
         return new RoleHierarchy(array(
             'ROLE_ADMIN' => array('ROLE_USER', 'ROLE_ALLOWED_TO_SWITCH'),
+            'ROLE_OPERATOR' => array('ROLE_USER'),
         ));
     }