LU-16655 scrub: upgrade scrub_file from 2.12 format

LU-16655 scrub: upgrade scrub_file from 2.12 format

Scrub_file->sf_oi_count has different offsets in Lustre-2.10,
Lustre-2.12, and Lustre-2.15 due to unintended format changes.
Lustre-2.15 reads sf_oi_count from offset of sf_success_count
and may initialize incorrect number of OI files, and not be
able to do FID lookups for existing filesystem objects.

Fixes: a114f6b8c5 ("LU-13344 servers: change request timeouts to s32")
Fixes: 4c2f028a95 ("LU-9019 osd-ldiskfs: migrate to 64 bit time")
Signed-off-by: Alexander Zarochentsev <alexander.zarochentsev@hpe.com>
Change-Id: Id7c8bd555229405d604456c48447f01fd121aca9
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/50455
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Reviewed-by: Andrew Perepechko <andrew.perepechko@hpe.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>