Merge pull request #2048 from xizhibei/master

Fix: always only one container got synced after download

roles/download/tasks/sync_container.yml

 ---
+- name: container_download | Make download decision if pull is required by tag or sha256
+  include: set_docker_image_facts.yml
+  delegate_to: "{{ download_delegate if download_run_once or omit }}"
+  delegate_facts: no
+  run_once: "{{ download_run_once }}"
+  when:
+    - download.enabled
+    - download.container
+  tags:
+    - facts
+
 - set_fact:
     fname: "{{local_release_dir}}/containers/{{download.repo|regex_replace('/|\0|:', '_')}}:{{download.tag|default(download.sha256)|regex_replace('/|\0|:', '_')}}.tar"
   run_once: true