N°2651 rollback gitignore for lib tests dirs

Too dangerous ! We'll work properly on this but for 2.8

lib/symfony/framework-bundle/Tests/DependencyInjection/Fixtures/yml/full.yml

@@ -0,0 +1,63 @@
+framework:
+    secret: s3cr3t
+    default_locale: fr
+    csrf_protection: true
+    form:
+        csrf_protection:
+            field_name: _csrf
+    http_method_override: false
+    esi:
+        enabled: true
+    ssi:
+        enabled: true
+    profiler:
+        only_exceptions: true
+        enabled: false
+    router:
+        resource:     '%kernel.project_dir%/config/routing.xml'
+        type:         xml
+    session:
+        storage_id:      session.storage.native
+        handler_id:      session.handler.native_file
+        name:            _SYMFONY
+        cookie_lifetime:  86400
+        cookie_path:      /
+        cookie_domain:    example.com
+        cookie_secure:    true
+        cookie_httponly:  false
+        use_cookies:      true
+        gc_probability:  1
+        gc_divisor:      108
+        gc_maxlifetime:  90000
+        save_path:       /path/to/sessions
+    templating:
+        engines:          [php, twig]
+        loader:           [loader.foo, loader.bar]
+        cache:            /path/to/cache
+        form:
+            resources:    [theme1, theme2]
+        hinclude_default_template: global_hinclude_template
+    assets:
+        version: v1
+    translator:
+        enabled:  true
+        fallback: fr
+        default_path: '%kernel.project_dir%/translations'
+        paths: ['%kernel.project_dir%/Fixtures/translations']
+    validation:
+        enabled: true
+    annotations:
+        cache:   file
+        debug:   true
+        file_cache_dir: '%kernel.cache_dir%/annotations'
+    serializer:
+         enabled:                    true
+         enable_annotations:         true
+         name_converter:             serializer.name_converter.camel_case_to_snake_case
+         circular_reference_handler: my.circular.reference.handler
+    property_info: ~
+    ide: file%%link%%format
+    request:
+        formats:
+            csv: ['text/csv', 'text/plain']
+            pdf: 'application/pdf'