Basket: add timeperiod to basket

[xam-stephan]

Expected Behavior

Please add timeperiod to basket configuration

Current Behavior

TEST VM:
root@icinga2:~# cat Director-Basket_ici2test_f192bcb.json | icingacli director basket restore
ERROR: RuntimeException in /usr/share/icingaweb2_modules/director/library/Director/Objects/IcingaObject.php:538 with message: Failed to load icinga_timeperiod "24x7"

Possible Solution

Add timeperiod to basket configuration

Steps to Reproduce (for bugs)

Export a basket from director (1) and import the json to a new instance director(2)

Your Environment

• Director version (System - About): master 788fb45
• Icinga Web 2 version and modules (System - About): 2.6.2
• Icinga 2 version (icinga2 --version): r2.10.2-1
• Operating System and version:
  No LSB modules are available.
  Distributor ID: Ubuntu
  Description: Ubuntu 18.04.1 LTS
  Release: 18.04
  Codename: bionic
• Webserver, PHP versions:
  PHP 7.2.10-0ubuntu0.18.04.1 (cli) (built: Sep 13 2018 13:45:02) ( NTS )
  Copyright (c) 1997-2018 The PHP Group
  Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies
  with Zend OPcache v7.2.10-0ubuntu0.18.04.1, Copyright (c) 1999-2018, by Zend Technologies