LU-17393 osd: recreate LAST_ID for local seq

LU-17393 osd: recreate LAST_ID for local seq

The file at /O/seq/LAST_ID in the sequences used by local storage
is not fixed by LFSCK currently, this patch addes the support to
scan the local storage sequences under root object director "/O"
and recreate or fix it accordingly.

Signed-off-by: Hongchao Zhang <hongchao@whamcloud.com>
Change-Id: I840a0fcfa207528c5a0e9f0c87df8b4745bba671
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/53898
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Lai Siyao <lai.siyao@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>