staging: lustre: lustre: lov: Added space

Added a spaces around '|' to fix the check detected by
checkpatch.pl

CHECK: spaces preferred around that '|' (ctx:VxV)

Signed-off-by: Anjali Menon <cse.anjalimenon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>