LU-17702 utils: 'lfs quota' MOUNT_POINT optional

LU-17702 utils: 'lfs quota' MOUNT_POINT optional

Specifying the MOUNT_POINT is now optional for 'lfs quota'.
Additionally multiple mount points can now be specified
to print quota information for each one.

If the mount point is not specified, quota information for ALL
mounted filesystems will be printed instead.

Changes were made to fix the quota formatting as some columns were
misaligned. Filesystem is no longer placed on newline if the
name exceeds 16 characters, this should make for better argument
parsing.

Signed-off-by: Frederick Dilger <fdilger@whamcloud.com>
Change-Id: I3985855c5ce67be0fb8107c046bd54b802e1f6f1
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/55683
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Hongchao Zhang <hongchao@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>