test: add a case for cgroupv2

Signed-off-by: David Scott <dave@recoil.org>

test/cases/040_packages/003_cgroupv2/check.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+set -x
+
+function failed {
+	printf "cgroup not detected, suite FAILED\n" >&1
+	exit 1
+}
+
+DEVICE=/dev/sdb
+
+mount | grep cgroup2 || failed
+
+printf "cgroup2 detected, suite PASSED\n" >&1

test/cases/040_packages/003_cgroupv2/test.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+# SUMMARY: Run containerd test
+# LABELS:
+# REPEAT:
+
+set -e
+
+# Source libraries. Uncomment if needed/defined
+#. "${RT_LIB}"
+. "${RT_PROJECT_ROOT}/_lib/lib.sh"
+
+NAME=cgroupv2
+
+clean_up() {
+	rm -rf ${NAME}-*
+}
+trap clean_up EXIT
+
+# Test code goes here
+linuxkit build -format kernel+initrd -name "${NAME}" test.yml
+RESULT="$(linuxkit run -mem 3072 ${NAME})"
+echo "${RESULT}" | grep -q "suite PASSED"
+
+exit 0

test/cases/040_packages/003_cgroupv2/test.yml

@@ -0,0 +1,19 @@
+kernel:
+  image: linuxkit/kernel:5.10.47
+  cmdline: "linuxkit.unified_cgroup_hierarchy=1 console=ttyS0 console=ttyAMA0"
+init:
+  - linuxkit/init:43c52456571369d62882605e4d510f0df3ed93de
+  - linuxkit/runc:5f9941eed05f58293f928c9f2f0b6a3f9f6f55c1
+onboot:
+  - name: test
+    image: alpine:3.13
+    binds:
+      - /check.sh:/check.sh
+      - /run:/run
+    command: ["sh", "./check.sh"]
+  - name: poweroff
+    image: linuxkit/poweroff:afe4b3ab865afe1e3ed5c88e58f57808f4f5119f
+    command: ["/bin/sh", "/poweroff.sh", "10"]
+files:
+  - path: check.sh
+    source: ./check.sh