/usr/lib/util-vserver/defaults/fstab is in util-vserver 0.30.216-pre3054-1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | none /proc proc defaults 0 0
none /dev/pts devpts gid=5,mode=620 0 0
|