Set containerd version to 1.4.4 (#7398)

* Set containerd version to 1.4.3

* Set containerd version to 1.4.4

Co-authored-by: Barry Melbourne <9964974+bmelbourne@users.noreply.github.com>

roles/kubernetes/preinstall/tasks/0020-verify-settings.yml

@@ -298,3 +298,19 @@
     that: ansible_os_family not in ["Flatcar Container Linux by Kinvolk"]
     msg: "download_run_once not supported for Flatcar Container Linux"
   when: download_run_once or download_force_cache
+
+- name: Ensure minimum containerd version
+  assert:
+    that: containerd_version is version(containerd_min_version_required, '>=')
+    msg: "containerd_version is too low. Minimum version {{ containerd_min_version_required }}"
+  run_once: yes
+  when:
+    - container_manager == 'containerd'
+
+- name: Stop if using deprecated containerd_config variable
+  assert:
+    that: containerd_config is not defined
+    msg: "Variable containerd_config is now deprecated. See https://github.com/kubernetes-sigs/kubespray/blob/master/inventory/sample/group_vars/all/containerd.yml for details."
+  when:
+    - containerd_config is defined
+    - not ignore_assert_errors