Refactor download role (#5697)

* download file

* download containers

* fix push image to nodes

* pull if none image on host

* fix

* improve docker image tag checks.
do not pull already cached images

* rebase fix merge conflict

* add support download_run_once when upgrade and scale cluster
add some test with download_run_once

* set default values to temp flag for every download cycle

* add save,load abilty for containerd and crio when download_run_once=true

* return redefine image save/load command to  set_docker_image_facts.yml

* move set command to set_container_facts

* ctr in containerd_bin_dir

* fix order of ctr image export arguments

* temporary disable download_run_once for containerd and crio
due https://github.com/containerd/containerd/issues/4075

* remove unused files

* fix strict yaml linter warning and errors

* refactor logical conditions to pull and cache container images

* remove comment due lint check

* document role

* remove image_load_on_localhost, because cached images are always loaded to docker on remote sites

* remove XXX from debug output

roles/download/tasks/main.yml

@@ -33,17 +33,3 @@
     - item.value.enabled
     - (not (item.value.container | default(false))) or (item.value.container and download_container)
     - (download_run_once and inventory_hostname == download_delegate) or (group_names | intersect(download.groups) | length)
-
-- name: download | Sync files / images from ansible host to nodes
-  include_tasks: "{{ include_file }}"
-  with_dict: "{{ downloads | combine(kubeadm_images) }}"
-  vars:
-    download: "{{ download_defaults | combine(item.value) }}"
-    include_file: "sync_{% if download.container %}container{% else %}file{% endif %}.yml"
-  when:
-    - not skip_downloads | default(false)
-    - download.enabled
-    - item.value.enabled
-    - download_run_once
-    - group_names | intersect(download.groups) | length
-    - not (inventory_hostname == download_delegate)