LU-9010 tests: Change static defines to use macro for kinode.c

This patch replaces completion which is defined statically in
file lustre/tests/kernel/kinode.c with kernel provided macro.

Signed-off-by: Arshad Hussain <arshad.super@gmail.com>
Change-Id: I7b41d3f0a67f471fe7f5dfa840521dc690a163d2
Reviewed-on: https://review.whamcloud.com/33935
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Jenkins
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Ben Evans <bevans@cray.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>