Fix applications endpoint hang when there are more then 256 apps

Author: asibross

spring-boot-admin-server/src/main/java/de/codecentric/boot/admin/server/web/ApplicationsController.java

@@ -71,7 +71,7 @@ public Flux<Application> applications() {
  return registry.getInstances()
  .filter(Instance::isRegistered)
  .groupBy(instance -> instance.getRegistration().getName())
- .flatMap(grouped -> toApplication(grouped.key(), grouped));
+ .flatMap(grouped -> toApplication(grouped.key(), grouped), Integer.MAX_VALUE);
  }