[FENIX-86] add siteCode to allowed keys

api/api-iam/iam-external/src/main/java/fr/gouv/vitamui/iam/external/server/service/UserExternalService.java

@@ -182,7 +182,7 @@ public class UserExternalService extends AbstractResourceClientService<UserDto,
     @Override
     protected Collection<String> getAllowedKeys() {
         return Arrays.asList("id", "lastname", "firstname", "identifier", "groupId", "language", "email", "otp",
-                "subrogeable", "phone", "mobile", "lastConnection", "status", "level", TYPE_KEY, CUSTOMER_ID_KEY);
+                "subrogeable", "phone", "mobile", "lastConnection", "status", "level", TYPE_KEY, CUSTOMER_ID_KEY, "siteCode");
     }
 
     @Override