VOL-381 add unum container to support ONOS cluster formation under swarm

Change-Id: Ic260edda19bb199ed040f05164ab605f28c919d0
diff --git a/unum/vendor/golang.org/x/sys/unix/syscall_no_getwd.go b/unum/vendor/golang.org/x/sys/unix/syscall_no_getwd.go
new file mode 100644
index 0000000..530792e
--- /dev/null
+++ b/unum/vendor/golang.org/x/sys/unix/syscall_no_getwd.go
@@ -0,0 +1,11 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build dragonfly freebsd netbsd openbsd
+
+package unix
+
+const ImplementsGetwd = false
+
+func Getwd() (string, error) { return "", ENOTSUP }