containerd support (#4664)

* Add limited containerd support

Containerd support for Ubuntu + Calico

* Added CRI-O support for ubuntu

* containerd support.

* Reset  containerd support.

* fix lint.

* implemented feedback

* Change task name cri xx instead of cri-o in reset task and timeout condition.

* set crictl to fixed version

* Use docker-ce's container.io package for containerd.

* Add check containerd is installable or not.

* Avoid stop docker when use containerd and optimize retry for reset.

* Add config.toml.

* Fixed containerd for kubelet.env.

* Merge PR #4629

* Remove unused ubuntu variable for containerd

* Polish code for containerd and cri-o

* Refactoring cri socket configuration.

* Configurable conmon.

* Remove unused crictl/runc download

* Now crictl and runc is downloaded by common crictl.yml.

* fixed yamllint error

* Fixed brokenfiles by conflict.

* Remove commented line in config.toml

* Remove readded v1.12.x version

* Fixed broken set_docker_image_facts

* Fix yamllint errors.

* Remove unused apt source

* Fix crictl could not be installed

* Add containerd config from skolekonov's PR #4601

roles/kubernetes/node/tasks/facts.yml

@@ -3,12 +3,23 @@
   shell: "docker info | grep 'Cgroup Driver' | awk -F': ' '{ print $2; }'"
   register: docker_cgroup_driver_result
   changed_when: false
+  when: container_manager in ['crio', 'docker', 'rkt']
 
-- name: set facts
+- name: set standalone_kubelet fact
   set_fact:
     standalone_kubelet: >-
       {%- if inventory_hostname in groups['kube-master'] and inventory_hostname not in groups['kube-node'] -%}true{%- else -%}false{%- endif -%}
+
+- name: set kubelet_cgroup_driver_detected fact for containerd
+  set_fact:
+    kubelet_cgroup_driver_detected: >-
+      {%- if containerd_use_systemd_cgroup -%}systemd{%- else -%}cgroupfs{%- endif -%}
+  when: container_manager == 'containerd'
+
+- name: set kubelet_cgroup_driver_detected fact for other engines
+  set_fact:
     kubelet_cgroup_driver_detected: "{{ docker_cgroup_driver_result.stdout }}"
+  when: container_manager in ['crio', 'docker', 'rkt']
 
 - name: os specific vars
   include_vars: "{{ item }}"