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/kubeadm/templates/kubeadm-client.conf.v1alpha2.j2

@@ -16,8 +16,4 @@ discoveryTokenAPIServers:
 discoveryTokenUnsafeSkipCAVerification: true
 nodeRegistration:
   name: {{ kube_override_hostname }}
-{% if container_manager == 'crio' %}
-  criSocket: /var/run/crio/crio.sock
-{% else %}
-  criSocket: /var/run/dockershim.sock
-{% endif %}
+  criSocket: {{ cri_socket }}

roles/kubernetes/kubeadm/templates/kubeadm-client.conf.v1alpha3.j2

@@ -16,8 +16,4 @@ discoveryTokenAPIServers:
 discoveryTokenUnsafeSkipCAVerification: true
 nodeRegistration:
   name: {{ kube_override_hostname }}
-{% if container_manager == 'crio' %}
-  criSocket: /var/run/crio/crio.sock
-{% else %}
-  criSocket: /var/run/dockershim.sock
-{% endif %}
+  criSocket: {{ cri_socket }}

roles/kubernetes/kubeadm/templates/kubeadm-client.conf.v1beta1.j2

@@ -16,8 +16,4 @@ discovery:
 caCertPath: {{ kube_cert_dir }}/ca.crt
 nodeRegistration:
   name: {{ kube_override_hostname }}
-{% if container_manager == 'crio' %}
-  criSocket: /var/run/crio/crio.sock
-{% else %}
-  criSocket: /var/run/dockershim.sock
-{% endif %}
+  criSocket: {{ cri_socket }}