Infer systemd cgroup based on path suffix.

Signed-off-by: Lantao Liu <lantaol@google.com>

pkg/server/sandbox_run_test.go

@@ -61,7 +61,7 @@ func getRunPodSandboxTestData() (*runtime.PodSandboxConfig, *imagespec.ImageConf
 	}
 	specCheck := func(t *testing.T, id string, spec *runtimespec.Spec) {
 		assert.Equal(t, "test-hostname", spec.Hostname)
-		assert.Equal(t, getCgroupsPath("/test/cgroup/parent", id, false), spec.Linux.CgroupsPath)
+		assert.Equal(t, getCgroupsPath("/test/cgroup/parent", id), spec.Linux.CgroupsPath)
 		assert.Equal(t, relativeRootfsPath, spec.Root.Path)
 		assert.Equal(t, true, spec.Root.Readonly)
 		assert.Contains(t, spec.Process.Env, "a=b", "c=d")