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>

inventory/sample/group_vars/all/containerd.yml

@@ -1,19 +1,30 @@
 ---
 # Please see roles/container-engine/containerd/defaults/main.yml for more configuration options
 
-# Example: define registry mirror for docker hub
+# containerd_default_runtime: "runc"
+# containerd_snapshotter: "native"
 
-# containerd_config:
-#   grpc:
-#     max_recv_message_size: 16777216
-#     max_send_message_size: 16777216
-#   debug:
-#     level: ""
-#   registries:
-#     "docker.io":
-#       - "https://mirror.gcr.io"
-#       - "https://registry-1.docker.io"
-#   max_container_log_line_size: -1
-#   metrics:
-#     address: ""
-#     grpc_histogram: false
+# containerd_runtimes:
+#   - name: runc
+#     type: "io.containerd.runc.v2"
+#     engine: ""
+#     root: ""
+# Example for Kata Containers as additional runtime:
+#   - name: kata
+#     type: "io.containerd.kata.v2"
+#     engine: ""
+#     root: ""
+
+# containerd_grpc_max_recv_message_size: 16777216
+# containerd_grpc_max_send_message_size: 16777216
+
+# containerd_debug_level: "info"
+
+# containerd_metrics_address: ""
+
+# containerd_metrics_grpc_histogram: false
+
+# containerd_registries:
+#   "docker.io": "https://registry-1.docker.io"
+
+# containerd_max_container_log_line_size: -1