LU-4100 utils: Remove extra space of lfs getstripe

LU-4100 utils: Remove extra space of lfs getstripe

'lfs getstripe $dir' command prints an extra space at the end of
the output line, which is particularly annoying for parsing in
scripts.

This patch fixes this problem.

Signed-off-by: Li Xi <lixi@ddn.com>
Change-Id: Iee50939f2b93bbd8d1c506bb90bc761a9f4dbeaf
Reviewed-on: http://review.whamcloud.com/7992
Tested-by: Hudson
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>