update KeyCloakConfig like in the KeycloakDemo

Co-authored-by: LukasEttel <lukas.ettie@yahoo.de>
Co-authored-by: AndiBuls <andreas.buls@uni-duesseldorf.de>

src/main/java/mops/gruppen2/controller/APIController.java

@@ -11,6 +11,7 @@ import mops.gruppen2.service.APIFormatterService;
 import mops.gruppen2.service.EventService;
 import mops.gruppen2.service.GroupService;
 import mops.gruppen2.service.SerializationService;
+import org.springframework.security.access.annotation.Secured;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
@@ -33,6 +34,7 @@ public class APIController {
     }
 
     @GetMapping("/updateGroups/{status}")
+    @Secured("ROLE_api_user")
     @ApiOperation(value = "Gibt alle Gruppen zurück in denen sich etwas geändert hat")
     public UpdatedGroupRequestMapper updateGroup(@ApiParam("Letzter Status des Anfragestellers")  @PathVariable Long status) throws EventException {
         List<Event> events = eventService.getNewEvents(status);

src/main/java/mops/gruppen2/controller/Gruppen2Controller.java

@@ -14,6 +14,7 @@ import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.*;
+import org.springframework.web.client.RestTemplate;
 import org.springframework.web.server.ResponseStatusException;
 
 import javax.annotation.security.RolesAllowed;
@@ -27,6 +28,8 @@ public class Gruppen2Controller {
 
     @Autowired
     Gruppen2Config gruppen2Config;
+    @Autowired
+    RestTemplate serviceAccountRestTemplate;
 
     private final KeyCloakService keyCloakService;
     private final EventService eventService;