Backport impr(ARSN-475): Add bucketOwnerId field to ObjectMD model#2429

bert-e merged 3 commits intodevelopment/7.70scality/Arsenal:development/7.70from

improvement/ARSN-475-backport-bucketowneridscality/Arsenal:improvement/ARSN-475-backport-bucketowneridCopy head branch name to clipboard