Add support for containerd container runtime

k8s/crds/kops.k8s.io_clusters.yaml

@@ -331,6 +331,40 @@ spec:
               description: ConfigStore is the VFS path to where the configuration
                 (Cluster, InstanceGroups etc) is stored
               type: string
+            containerd:
+              description: Component configurations
+              properties:
+                address:
+                  description: Address of containerd's GRPC server
+                    (default "/run/containerd/containerd.sock")
+                  type: string
+                externalConfig:
+                  description: Complete containerd config file provided by the user
+                  type: string
+                logLevel:
+                  description: Logging level [trace, debug, info, warn, error, fatal,
+                    panic] (default "warn")
+                  type: string
+                root:
+                  description: Directory for persistent data (default "/var/lib/containerd")
+                  type: string
+                skipInstall:
+                  description: Prevents kops from installing and modifying containerd
+                    in any way (default "false")
+                  type: boolean
+                state:
+                  description: Directory for execution state files
+                    (default "/run/containerd")
+                  type: string
+                version:
+                  description: Consumed by nodeup and used to pick the containerd version
+                  type: string
+              type: object
+            containerRuntime:
+              description: ContainerRuntime is the is the software that runs at the
+                lowest layers of a Kubernetes node and, among other things, manages
+                container images starts, starts and stops container
+              type: string
             dnsControllerGossipConfig:
               description: DNSControllerGossipConfig for the cluster assuming the
                 use of gossip DNS

nodeup/pkg/model/BUILD.bazel

@@ -5,6 +5,7 @@ go_library(
     srcs = [
         "architecture.go",
         "cloudconfig.go",
+        "containerd.go",
         "context.go",
         "convenience.go",
         "directories.go",
@@ -82,6 +83,7 @@ go_library(
 go_test(
     name = "go_default_test",
     srcs = [
+        "containerd_test.go",
         "docker_test.go",
         "kube_apiserver_test.go",
         "kube_proxy_test.go",