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

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

Error and warning messages in lfs_setquota() and the llapi functions
it calls 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: I598be2d73a28675c06b77ca6f9fa0544ecaecc7e
Reviewed-on: https://review.whamcloud.com/28253
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>