Update vendor or containers/common moving pkg/cgroups there

[NO NEW TESTS NEEDED] This is just moving pkg/cgroups out so
existing tests should be fine.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

vendor/github.com/containers/common/pkg/cgroups/systemd.go

@@ -0,0 +1,80 @@
+package cgroups
+
+import (
+	"context"
+	"fmt"
+	"path/filepath"
+	"strings"
+
+	systemdDbus "github.com/coreos/go-systemd/v22/dbus"
+	"github.com/godbus/dbus/v5"
+)
+
+func systemdCreate(path string, c *systemdDbus.Conn) error {
+	slice, name := filepath.Split(path)
+	slice = strings.TrimSuffix(slice, "/")
+
+	var lastError error
+	for i := 0; i < 2; i++ {
+		properties := []systemdDbus.Property{
+			systemdDbus.PropDescription(fmt.Sprintf("cgroup %s", name)),
+			systemdDbus.PropWants(slice),
+		}
+		pMap := map[string]bool{
+			"DefaultDependencies": false,
+			"MemoryAccounting":    true,
+			"CPUAccounting":       true,
+			"BlockIOAccounting":   true,
+		}
+		if i == 0 {
+			pMap["Delegate"] = true
+		}
+		for k, v := range pMap {
+			p := systemdDbus.Property{
+				Name:  k,
+				Value: dbus.MakeVariant(v),
+			}
+			properties = append(properties, p)
+		}
+
+		ch := make(chan string)
+		_, err := c.StartTransientUnitContext(context.TODO(), name, "replace", properties, ch)
+		if err != nil {
+			lastError = err
+			continue
+		}
+		<-ch
+		return nil
+	}
+	return lastError
+}
+
+/*
+   systemdDestroyConn is copied from containerd/cgroups/systemd.go file, that
+   has the following license:
+
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       https://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+func systemdDestroyConn(path string, c *systemdDbus.Conn) error {
+	name := filepath.Base(path)
+
+	ch := make(chan string)
+	_, err := c.StopUnitContext(context.TODO(), name, "replace", ch)
+	if err != nil {
+		return err
+	}
+	<-ch
+	return nil
+}