LU-18279 obdclass: fix class_add_nids_to_uuid

LU-18279 obdclass: fix class_add_nids_to_uuid

Fix class_add_nids_to_uuid to utilize all 32
(MTI_NIDS_MAX) elements in lnet_nid array instead of
31 (MTI_NIDS_MAX -1).

Signed-off-by: Sergey Cheremencev <scherementsev@ddn.com>
Change-Id: Ibbedda6e28e6c26b11ae95d89ad31afd812c559f
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/56541
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>