Merge pull request #231 from mheon/fix_rootless_systemd

Ensure that rootless cgroupsv1 will select cgroupfs

common/pkg/config/systemd.go

@@ -2,7 +2,17 @@
 
 package config
 
+import (
+	"github.com/containers/common/pkg/cgroupv2"
+	"github.com/containers/storage/pkg/unshare"
+)
+
 func defaultCgroupManager() string {
+	enabled, err := cgroupv2.Enabled()
+	if err == nil && !enabled && unshare.IsRootless() {
+		return CgroupfsCgroupsManager
+	}
+
 	return SystemdCgroupsManager
 }
 func defaultEventsLogger() string {