LU-5170 lfs: Standardize error messages in lfs_setdirstripe()

LU-5170 lfs: Standardize error messages in lfs_setdirstripe()

Error and warning messages in lfs_setdirstripe() are updated to a
standard format.  Messages are prefixed with the name of the utility
and the command that caused the error.  User-provided values are
delimited with single quotes.

Test-Parameters: trivial
Signed-off-by: Steve Guminski <stephenx.guminski@intel.com>
Change-Id: I1dcc60aef3eab33610cc5f1e2b2d7e570568aca4
Reviewed-on: https://review.whamcloud.com/28086
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>