fixed code coverage

phpunit.xml.dist

@@ -24,7 +24,8 @@
             <exclude>
                 <directory>./src/Symfony/Bundle/*/Resources</directory>
                 <directory>./src/Symfony/Component/*/Resources</directory>
-                <file>./src/Symfony/Component/HttpKernel/bootstrap*</file>
+                <file>./src/Symfony/Component/HttpKernel/bootstrap.php</file>
+                <file>./src/Symfony/Component/HttpKernel/bootstrap_cache.php</file>
             </exclude>
         </whitelist>
     </filter>