Add support for S3 Object Lock with the following new options:
- --s3-object-lock-mode: set retention mode (GOVERNANCE/COMPLIANCE/copy)
- --s3-object-lock-retain-until-date: set retention date (RFC3339/duration/copy)
- --s3-object-lock-legal-hold-status: set legal hold (ON/OFF/copy)
- --s3-bypass-governance-retention: bypass GOVERNANCE lock on delete
- --s3-bucket-object-lock-enabled: enable Object Lock on bucket creation
- --s3-object-lock-set-after-upload: apply lock via separate API calls
The special value "copy" preserves the source object's setting when used
with --metadata flag, enabling scenarios like cloning objects from
COMPLIANCE to GOVERNANCE mode while preserving the original retention date.
Includes integration tests that create a temporary Object Lock bucket covering:
- Retention Mode and Date
- Legal Hold
- Apply settings after upload
- Override protections using bypass-governance flag
The tests are gracefully skipped on providers that do not support Object Lock.
Fixes#4683Closes#7894#7893#8866
7d0a8bf850