Refactor downloads to use download role directly (#1824)

* Refactor downloads to use download role directly

Also disable fact delegation so download delegate works acros OSes.

* clean up bools and ansible_os_family conditionals

roles/download/tasks/download_prep.yml

@@ -0,0 +1,32 @@
+---
+- name: Register docker images info
+  raw: >-
+    {{ docker_bin_dir }}/docker images -q | xargs {{ docker_bin_dir }}/docker inspect -f "{{ '{{' }} (index .RepoTags 0) {{ '}}' }},{{ '{{' }} (index .RepoDigests 0) {{ '}}' }}" | tr '\n' ','
+  no_log: true
+  register: docker_images
+  failed_when: false
+  changed_when: false
+  check_mode: no
+
+- name: container_download | Create dest directory for saved/loaded container images
+  file:
+    path: "{{local_release_dir}}/containers"
+    state: directory
+    recurse: yes
+    mode: 0755
+    owner: "{{ansible_ssh_user|default(ansible_user_id)}}"
+
+- name: container_download | create local directory for saved/loaded container images
+  file:
+    path: "{{local_release_dir}}/containers"
+    state: directory
+    recurse: yes
+  delegate_to: localhost
+  delegate_facts: false
+  become: false
+  run_once: true
+  when:
+    - download_run_once
+    - download_delegate == 'localhost'
+  tags:
+    - localhost