LU-15057 utils: pool quota man

LU-15057 utils: pool quota man

Adding pool quota man for setquota and
quota commands.
Remove [-o <obd_uuid>|-i <mdt_idx>|-I <ost_idx>]
from the case "lfs quota -t". Grace period
is stored only at quota master. Furthermore,
command lfs quota -t -I 0 /mnt/testfs fails
with EOPNOTSUPP.

Test-Parameters: trivial
Lustre-change: https://review.whamcloud.com/45121/
Lustre-commit: I368e22b782bd3626f64907059ea329e94986535b

Signed-off-by: Sergey Cheremencev <sergey.cheremencev@hpe.com>
Change-Id: I0e2d2c3df05c0053a1306dec9aa7353ce80162df
Reviewed-on: https://review.whamcloud.com/c/ex/lustre-release/+/54893
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>