LU-9324 lfs: add setstripe --copy=lustre_file_or_dir parameter

LU-9324 lfs: add setstripe --copy=lustre_file_or_dir parameter

Add a "lfs setstripe --copy=<lustre_src> <lustre_file_or_dir_dst>"
usage to set stripe using stripe info from a source lustre file/dir.

Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Change-Id: Ibcd80f98c53bdff5b41ba9b1010fceefd6c9d8b7
Reviewed-on: https://review.whamcloud.com/26879
Tested-by: Jenkins
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>