MinIO: Major feature release

## Highlights - Added comprehensive support for **[Server Side Encryption (SSE-C)](https://docs.aws.amazon.com/AmazonS3/latest/dev/ServerSideEncryptionCustomerKeys.html)**. - Create **large buckets** with *more* than 16 disks on erasure coded Minio server backends. You can also provide *more* than 16 servers upto **32** on the command line, refer to our documentation [here](https://docs.minio.io/docs/minio-large-bucket-support-quickstart-guide) to get started. - Introducing **NAS** gateway mode, refer to our documentation [here](https://docs.minio.io/docs/minio-gateway-for-nas) to get started. ## Changelog - Add Minio TLS configuration doc for Kubernetes deployment (#5617) <Nitish Tiwari> - Fix deadlock in in-place CopyObject decryption/encryption (#5637) <Harshavardhana> - Remove madmin docs from top level docs directory (#5636) <Nitish Tiwari> - Add healthcheck endpoints (#5543) <Nitish Tiwari> - Return authHeaderMalformed for an incorrect region in signature (#5618) <Harshavardhana> - Save ETag when updating metadata (#5626) <Harshavardhana> - Cleanup orchestration documents (#5623) <Nitish Tiwari> - Remove unwanted errorIf calls (#5621) <kannappanr> - [doc] fix openssl command for ECDSA key generation (#5616) <Andreas Auernhammer> - Fix mqtt example py code which was not working (#5619) <Dee Koder> - Pass location in MakeBucketWithLocation call (#5605) <poornas> - Ensure to load only regular files for CAs (#5612) <Harshavardhana> - SSE-C CopyObject key-rotation doesn't need metadata REPLACE value (#5611) <Harshavardhana> - Add missing wget command for easy cut copy paste. (#5609) <Dee Koder> - SSE-C: Add support in Bucket Post Policy (#5607) <Anis Elleuch> - Return bit-rot verified data instead of re-reading from disk (#5568) <Aditya Manthramurthy> - Support SSE-C multipart source objects in CopyObject (#5603) <Harshavardhana> - Handle incoming proxy requests ip, scheme (#5591) <Harshavardhana> - Make sure to filter out internal metadata (#5601) <Harshavardhana> - Use toAPIErrorCode in HeadObject handler when decrypting request fails (#5600) <Anis Elleuch> - vendor update github.com/minio/sio (#5599) <Andreas Auernhammer> - Set appropriate encryption headers in HEAD object response (#5596) <Harshavardhana> - Add multipart support in SSE-C encryption (#5576) <Anis Elleuch> - Honor global flags irrespective of the position. (#5486) <kannappanr> - Fix shadowing issue reported by go vet (#5590) <Harshavardhana> - Remove stable sort usage when not needed (#5586) <Harshavardhana> - Fix gofmt issues reported for simplification (#5581) <Harshavardhana> - Move rpc version to 2.0.0 to align with backend migration (#5575) <Harshavardhana> - Support encryption for CopyObject, GET-Range requests (#5544) <Harshavardhana> - update docs for NAS gateway (#5569) <poornas> - Fix docs in admin API (#5559) <Harshavardhana> - Do not close *lock.LockedFile on failure (#5565) <Krishnan Parthasarathi> - Change CopyObject{Part} to single srcInfo argument (#5553) <Harshavardhana> - Provide more descriptive error during erasure init (#5282) <Krishna Srinivas> - xl: Avoid removing directory content in Delete API (#5548) <Anis Elleuch> - Avoid significant connections in TIME_WAIT (#5555) <Harshavardhana> - Add NAS gateway support (#5516) <poornas> - posix.RenameFile(): Allow overwriting an empty directory (#5551) <Anis Elleuch> - gateway/gcs: Remove unused storageEndpoint (#5556) <Harshavardhana> - tests: Fix failed notify webhook test (#5528) <A. Elleuch> - Fix delete bucket policies properly (#5540) <Harshavardhana> - Rename minio-limitations.md to minio-limits.md (#5541) <Harshavardhana> - Add large bucket support for erasure coded backend (#5160) <Harshavardhana> - Directory HEADs with encryption headers shouldn't return errors (#5539) <Harshavardhana> - fail when endpoints point to same path locally (#5523) <Harshavardhana> - Cleanup banners and remove fossa/snap (#5530) <Harshavardhana> - revamp minio build messages (#5519) <Harshavardhana> - Avoid shadowing ignored errors listAllBuckets() (#5524) <Harshavardhana> - [SSE-C]: avoid encrypting empty objects. (#5525) <Andreas Auernhammer> - Converge repeated code to common deleteBucketMetadata() (#5508) <Harshavardhana> - update dsync implementation to fix a regression (#5513) <Harshavardhana> - Unify gateway and object layer. (#5487) <poornas>