Update config names to match SS4 namespaces

_config/_config.yml

@@ -1,8 +1,8 @@
 ---
 Name: requestprocessors
 ---
-Injector:
+SilverStripe\Core\Injector\Injector:
   RequestProcessor:
     properties:
       filters:
-        - '%$TestSessionRequestFilter'
+        - '%$TestSessionRequestFilter'

_config/routes.yml

@@ -1,6 +1,6 @@
 ---
 Name: testsessionroutes
 ---
-Director:
+SilverStripe\Control\Director:
   rules:
-    'dev/testsession': 'TestSessionController'
+    'dev/testsession': 'TestSessionController'