MinIO: Bugfix Release

## Highlights - Click [here](https://min.io/download) to download the latest version of MinIO. - Click [here](https://min.io/pricing) for production support. - **NOTE**: It is advised that anyone upgrading from any release from 2020 should directly upgrade to RELEASE.2021-06-07T21-40-51Z - (*or any release prior to RELEASE.2021-05-11T23-27-41Z so that you can then directly upgrade to RELEASE.2021-06-07T21-40-51Z*). A healing issue that leads to premature truncation of objects when healing legacy content before versioning was introduced refer #12459, #12410, and #12451 - fix: legacy objects with 10MiB blockSize should use right buffers. See (#12459) for more details. - Add healing-related metrics in official dashboard. See (#12456) for more details. - Admin health info command-related improvements. See (#11914, #12461, #12421) for more details. - Improvements to replication and replication metrics. See (#12378, #12379) for more details. - fix: remove parent dirs in RenameData upon failure. See (#12452) for more details. - Improve disk usage calculation. See (#12376, #12432) for more details. - xl: Avoid multi-disks node to exit when one disk fails. See (#12423) for more details. - tiering: add aws role support for s3. See (#12424) for more details. - [Tiering] Support remote tiers with object versioning. See (#12342) for more details. - fix: etcd IAM encryption fails due to incorrect kms.Context. See (#12431) for more details. - Fix nil disk check in parity upgrade feature. See (#12444) for more details. - Add support for existing object replication. See (#12109) for more details. - sts: Map parent user to the STS access key policy. See (#12411) for more details. - support ldap:username for policy substitution. See (#12390) for more details. - Add xl-meta data extraction. See (#12396) for more details. ## Changelog - Add healing related metrics in official dashboard (#12456) (06/08/21) (Nitish Tiwari) - Do not send 'sensitive' flag to client (#12461) (06/08/21) (Shireesh Anjal) - fix: legacy objects with 10MiB blockSize should use right buffers (#12459) (06/07/21) (Harshavardhana) - fix: remove parent dirs in RenameData upon failure (#12452) (06/07/21) (Harshavardhana) - Improve disk usage calculation (#12376) (06/07/21) (Klaus Post) - build edge off from latest release (06/05/21) (Harshavardhana) - xl: Avoid multi-disks node to exit when one disk fails (#12423) (06/05/21) (Anis Elleuch) - upgrade madmin-go to v1.0.11 (06/04/21) (Harshavardhana) - tiering: add aws role support for s3 (#12424) (06/04/21) (Poorna Krishnamoorthy) - fix: etcd IAM encryption fails due to incorrect kms.Context (#12431) (06/04/21) (Harshavardhana) - add error level logger similar to Info() for console (#12445) (06/04/21) (Harshavardhana) - Fix nil disk check in parity upgrade feature (#12444) (06/04/21) (Klaus Post) - fix: close the channel appropriately for dataUsageEntry (#12432) (06/03/21) (Harshavardhana) - s3: Return correct error XML tag in case of copy object (#12427) (06/04/21) (Anis Elleuch) - [Tiering] Support remote tiers with object versioning (#12342) (06/03/21) (Aditya Manthramurthy) - simplify dockerfiles and remove duplication (#12419) (06/03/21) (Harshavardhana) - Redact sensitive values from config in health data (#12421) (06/03/21) (Shireesh Anjal) - remove deprecated kms_vault unused key name (06/03/21) (Harshavardhana) - remove ruleguard rules (06/01/21) (Harshavardhana) - Add support for existing object replication. (#12109) (06/01/21) (Poorna Krishnamoorthy) - rename all remaining packages to internal/ (#12418) (06/01/21) (Harshavardhana) - fix: no need to proxy if IAM not initialized (#12416) (06/01/21) (Harshavardhana) - avoid metrics not meant for single drive mode (#12415) (06/01/21) (Harshavardhana) - Refactor health data structure (#11914) (06/01/21) (Bala FA) - sts: Map parent user to the STS access key policy (#12411) (06/01/21) (Anis Elleuch) - Drop Pending size and count from replication metrics (#12378) (05/31/21) (Poorna Krishnamoorthy) - docs: add hostname entry for docker stack deploy (05/31/21) (Harshavardhana) - docs: mention docker stack deploy doesn't work with compose.yml (05/31/21) (Harshavardhana) - remove all docker swarm references (05/31/21) (Harshavardhana) - move to iam, bucket policy from minio/pkg (#12400) (05/29/21) (Harshavardhana) - always indent and reply policy JSON (#12399) (05/29/21) (Harshavardhana) - move the dependency to minio/pkg for common libraries (#12397) (05/28/21) (Harshavardhana) - replication: Init worker kill channel correctly (#12379) (05/28/21) (Poorna Krishnamoorthy) - support ldap:username for policy substitution (#12390) (05/28/21) (Harshavardhana) - fix: move to new etcd imports (#12391) (05/28/21) (Harshavardhana) - Add xl-meta data extraction (#12396) (05/28/21) (Klaus Post)