CLDSRV-729: don't require content-md5 header in put-bucket-cors and d…#5899

bert-e merged 2 commits intodevelopment/7.70scality/cloudserver:development/7.70from

bugfix/CLDSRV-729-remove-md5-header-requirementscality/cloudserver:bugfix/CLDSRV-729-remove-md5-header-requirementCopy head branch name to clipboard