Only download kubeadm images where needed (#10899)

* Refactor of kubeadm images listing

Instead of setting multiples facts, we directly create the dict we need from
kubeadm output.

* Remove useless 'default' filters in roles/download

* Only download kubeadm images where needed

roles/download/tasks/prep_kubeadm_images.yml

@@ -20,7 +20,7 @@
     dest: "{{ kube_config_dir }}/kubeadm-images.yaml"
     mode: 0644
   when:
-    - not skip_kubeadm_images | default(false)
+    - not skip_kubeadm_images
 
 - name: Prep_kubeadm_images | Copy kubeadm binary from download dir to system path
   copy:
@@ -36,36 +36,9 @@
     state: file
 
 - name: Prep_kubeadm_images | Generate list of required images
-  shell: "set -o pipefail && {{ bin_dir }}/kubeadm config images list --config={{ kube_config_dir }}/kubeadm-images.yaml | grep -Ev 'coredns|pause'"
-  args:
-    executable: /bin/bash
+  command: "{{ bin_dir }}/kubeadm config images list --config={{ kube_config_dir }}/kubeadm-images.yaml"
   register: kubeadm_images_raw
   run_once: true
   changed_when: false
   when:
-    - not skip_kubeadm_images | default(false)
-
-- name: Prep_kubeadm_images | Parse list of images
-  vars:
-    kubeadm_images_list: "{{ kubeadm_images_raw.stdout_lines }}"
-  set_fact:
-    kubeadm_image:
-      key: "kubeadm_{{ (item | regex_replace('^(?:.*\\/)*', '')).split(':')[0] }}"
-      value:
-        enabled: true
-        container: true
-        repo: "{{ item | regex_replace('^(.*):.*$', '\\1') }}"
-        tag: "{{ item | regex_replace('^.*:(.*)$', '\\1') }}"
-        groups: k8s_cluster
-  loop: "{{ kubeadm_images_list | flatten(levels=1) }}"
-  register: kubeadm_images_cooked
-  run_once: true
-  when:
-    - not skip_kubeadm_images | default(false)
-
-- name: Prep_kubeadm_images | Convert list of images to dict for later use
-  set_fact:
-    kubeadm_images: "{{ kubeadm_images_cooked.results | map(attribute='ansible_facts.kubeadm_image') | list | items2dict }}"
-  run_once: true
-  when:
-    - not skip_kubeadm_images | default(false)
+    - not skip_kubeadm_images