LU-16828 sanity: wrong argument for find in test_133g

LU-16828 sanity: wrong argument for find in test_133g

> proc_regexp="/{proc,sys}/{fs,sys,kernel/debug}/{lustre,lnet}/"
> proc_dirs=$(eval ls -d $proc_regexp)

After running the upper commands, 'echo "$proc_dirs"' woud print
multiple lines like what sanity test 401a would print:

proc_dirs='/proc/fs/lustre/
/sys/fs/lustre/
/sys/kernel/debug/lnet/
/sys/kernel/debug/lustre/'

This will cause wrong command exectuted remotely in test_133g without
"-name" argument and badarea_io pipe after the command:

... |
xargs -n 1 find /proc/fs/lustre/
/sys/fs/lustre/
/sys/kernel/debug/lnet/
/sys/kernel/debug/lustre/ -name |
				xargs -n 1 badarea_io

This patch fixes the problem.

Test-Parameters: trivial testlist=sanity env=ONLY=133g
Signed-off-by: Li Xi <lixi@ddn.com>
Change-Id: I93d611c34eecfa6d14d3f83a60faa3e637514128
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/50994
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Alex Deiter <alex.deiter@gmail.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>