MinIO: Bug fix release.

- format: Check properly for disks in valid formats. (#3427) (20 hours ago) <Harshavardhana> - presign v2: include resp headers in signature calc (#3428) (20 hours ago) <Anis Elleuch> - lock: Moving locking to handler layer. (#3381) (2 days ago) <Harshavardhana> - env: Bring back MINIO_BROWSER env. (#3423) (2 days ago) <Harshavardhana> - FS/Multipart: Fix race between PutObjectPart and Complete/Abort multi… (#3419) (3 days ago) <Krishna Srinivas> - caching: Optimize memory allocations. (#3405) (4 days ago) <Harshavardhana> - startup: Show elapsed time in disks format process (#3413) (5 days ago) <Anis Elleuch> - Use a non member mutex lock for serverConfig access. (#3411) (5 days ago) <Karthic Rao> - Fix max cache size calculation when system RAM is inferior to the default cache size (#3410) (6 days ago) <Anis Elleuch> - srv-mux: do not print peek protocol EOF err msg (#3402) (7 days ago) <Anis Elleuch> - tests: Add tests for xl-v1-list-objects-heal (#3399) (7 days ago) <Anis Elleuch> - bucket-handlers: More tests for post form handler (#3392) (8 days ago) <Anis Elleuch> - postform: fix check when ${filename} is provided (#3391) (8 days ago) <Anis Elleuch> - tests: Enhance checkPostPolicy() coverage (#3389) (9 days ago) <Anis Elleuch> - fs: PutObject create 0byte objects properly. (#3387) (9 days ago) <Harshavardhana> - FS: sync abortMultipart cleanup and bg append (#3388) (9 days ago) <Krishnan Parthasarathi> - Post Policy Form: exhaustive post policy check (#3386) (10 days ago) <Anis Elleuch> - docs: removed the Edge tag reference. (#3366) (10 days ago) <koolhead17> - fs/xl: Combine input checks into re-usable functions. (#3383) (11 days ago) <Harshavardhana> - fs: Enable shutdown test with faulty disks (#3380) (11 days ago) <Anis Elleuch> - posix: Use preparePath only for paths used with syscall or os functions (#3377) (12 days ago) <Krishnan Parthasarathi> - postpolicy: handle Amazon S3 compatible content-length-range condition (#3376) (12 days ago) <Bala FA> - ListBuckets: Allow listBuckets request to be signed with region configured in config.json (#3374) (12 days ago) <Krishna Srinivas> - Implement BucketUpdater interface to call BucketMetaState methods. (#3375) (12 days ago) <Krishna Srinivas> - FS/CompleteMultipart: lock the namespace before renaming the appended tmp file. (#3371) (13 days ago) <Krishna Srinivas> - api: Allow reconnection of policy/notification rpc clients. (#3368) (13 days ago) <Harshavardhana> - fs: Do not print redundant md5Sum response header. (#3369) (13 days ago) <Harshavardhana> - Vendorize recent fixes in dsync (#3365) (2 weeks ago) <Krishnan Parthasarathi> - FS/Shutdown: cleanup and delete .minio.sys during Shutdown() (#3360) (2 weeks ago) <Krishna Srinivas> - docs: Modified the Docker doc to reflect distributed release image & (#3362) (2 weeks ago) <koolhead17> - args: Honor config-dir & quiet wherever they are (#3356) (2 weeks ago) <Anis Elleuch> - handlers: Handle re-direction properly for S3 requests. (#3355) (2 weeks ago) <Harshavardhana> - FS: Skip creating fs.json for objects created by minio (ex. policy.json) (#3353) (2 weeks ago) <Krishna Srinivas>