LU-19011 utils: lfs quota -a -u --busage has delimiter

LU-19011 utils: lfs quota -a -u --busage has delimiter

lfs quota all should insert a delimiter between the name and certain
parameter(busage, bhardlimit, bsoftlimit ...).

Fixes: 7c02893e12 ("LU-18079 utils: argument parse opts for lfs quota")
Signed-off-by: Sergey Cheremencev <scherementsev@ddn.com>
Change-Id: Icace5752c4a169858792748c5f4b41e336d18cac
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/59209
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Frederick Dilger <fdilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>