revendor containerd/cgroups

Note: now vndr >= v0.10 is required (https://github.com/containerd/cgroups/issues/139)

Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>

vendor/github.com/godbus/dbus/v5/homedir_dynamic.go

@@ -0,0 +1,15 @@
+// +build !static_build
+
+package dbus
+
+import (
+	"os/user"
+)
+
+func lookupHomeDir() string {
+	u, err := user.Current()
+	if err != nil {
+		return "/"
+	}
+	return u.HomeDir
+}