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/templates/kubelet.env.j2

@@ -43,9 +43,9 @@ KUBELET_HOSTNAME="--hostname-override={{ kube_override_hostname }}"
 {% if container_manager == 'docker' and kube_version is version('v1.12.0', '<') %}
 --docker-disable-shared-pid={{ kubelet_disable_shared_pid }} \
 {% endif %}
-{% if container_manager == 'crio' %}
+{% if container_manager != 'docker' %}
 --container-runtime=remote \
---container-runtime-endpoint=/var/run/crio/crio.sock \
+--container-runtime-endpoint={{ cri_socket }} \
 {% endif %}
 --anonymous-auth=false \
 --read-only-port={{ kube_read_only_port }} \

roles/kubernetes/node/templates/kubelet.env.v1beta1.j2

@@ -22,9 +22,9 @@ KUBELET_HOSTNAME="--hostname-override={{ kube_override_hostname }}"
 {% if container_manager == 'docker' and kube_version is version('v1.12.0', '<') %}
 --docker-disable-shared-pid={{ kubelet_disable_shared_pid }} \
 {% endif %}
-{% if container_manager == 'crio' %}
+{% if container_manager != 'docker' %}
 --container-runtime=remote \
---container-runtime-endpoint=/var/run/crio/crio.sock \
+--container-runtime-endpoint={{ cri_socket }} \
 {% endif %}
 {% if kube_version is version('v1.8', '<') %}
 --experimental-fail-swap-on={{ kubelet_fail_swap_on|default(true)}} \