set systemdcgroup true by default in containerd config

Author: BenTheElder

images/base/files/etc/containerd/config.toml

@@ -19,11 +19,18 @@ version = 2
   runtime_type = "io.containerd.runc.v2"
   # Generated by "ctr oci spec" and modified at base container to mount poduct_uuid
   base_runtime_spec = "/etc/containerd/cri-base.json"
+  [plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc.options]
+    # use systemd cgroup by default
+    SystemdCgroup = true
 
 # Setup a runtime with the magic name ("test-handler") used for Kubernetes
 # runtime class tests ...
 [plugins."io.containerd.grpc.v1.cri".containerd.runtimes.test-handler]
+  # same settings as runc
   runtime_type = "io.containerd.runc.v2"
+  base_runtime_spec = "/etc/containerd/cri-base.json"
+  [plugins."io.containerd.grpc.v1.cri".containerd.runtimes.test-handler.options]
+    SystemdCgroup = true
 
 [plugins."io.containerd.grpc.v1.cri"]
   # use fixed sandbox image