fix download issues when using scale

kubespray/project/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
+    - not skip_kubeadm_images | default(false)
 
 - name: Prep_kubeadm_images | Copy kubeadm binary from download dir to system path
   copy:
@@ -36,9 +36,36 @@
     state: file
 
 - name: Prep_kubeadm_images | Generate list of required images
-  command: "{{ bin_dir }}/kubeadm config images list --config={{ kube_config_dir }}/kubeadm-images.yaml"
+  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
   register: kubeadm_images_raw
   run_once: true
   changed_when: false
   when:
-    - not skip_kubeadm_images
+    - 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)