Backport remove dockerproject (#5682) (#5780)

* Remove dockerproject org (#5548)

* Change dockerproject.org to download.docker.com

dockerproject.org was deprecated in 2017 and has gone down.

* Restore yum repo for containerd

Change-Id: I883bb512a2164a85865b1bd4fb569af0358c8c2b

Co-authored-by: Craig Rodrigues <rodrigc@crodrigues.org>

* remove legacy docker repo in kubernetes/preinstall before any packages installed (#5640)

* Remove dockerproject_.+_repo_.+ variables (#5662)

This 38688a4486 change replaces the
value for dockerproject_.+_repo_.+ docker variables but their new
value was previously defined in other variables. This change removes
the dockerproject_.+_repo_.+ docker variables in favor of the older
ones.

* Remove stale legacy yum docker repo /etc/yum.repos.d/docker.repo (#5569)

* Remove stale legacy yum docker repo /etc/yum.repos.d/docker.repo

* move task 'Remove legacy docker repo file' to pre-upgrade.yml

* fix upgrade procedure when in playbook (#5695)

exists role kubernetes/preinstall and not exists role container-engine

 error 'yum_repo_dir' is undefined

Co-authored-by: Matthew Mosesohn <matthew.mosesohn@gmail.com>
Co-authored-by: Craig Rodrigues <rodrigc@crodrigues.org>
Co-authored-by: Victor Morales <chipahuac@hotmail.com>

Co-authored-by: Kubernetes Prow Robot <k8s-ci-robot@users.noreply.github.com>
Co-authored-by: Matthew Mosesohn <matthew.mosesohn@gmail.com>
Co-authored-by: Craig Rodrigues <rodrigc@crodrigues.org>
Co-authored-by: Victor Morales <chipahuac@hotmail.com>

roles/kubernetes/preinstall/defaults/main.yml

@@ -54,3 +54,5 @@ etc_hosts_localhost_entries:
 # Minimal memory requirement in MB for safety checks
 minimal_node_memory_mb: 1024
 minimal_master_memory_mb: 1500
+
+yum_repo_dir: /etc/yum.repos.d

roles/kubernetes/preinstall/tasks/0070-system-packages.yml

@@ -17,6 +17,14 @@
   tags:
     - bootstrap-os
 
+- name: Remove legacy docker repo file
+  file:
+    path: "{{ yum_repo_dir }}/docker.repo"
+    state: absent
+  when:
+    - ansible_distribution in ["CentOS","RedHat","OracleLinux"]
+    - not is_atomic
+
 - name: Install python-dnf for latest RedHat versions
   command: dnf install -y python-dnf yum
   register: dnf_task_result