docs: Add docs for minio limitations. (#3477)

docs/minio-limitations.md

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+## Minio Server Limits Per Tenant
+We found the following APIs to be redundant or less useful outside of AWS. If you have a different view on any of the APIs we missed, please open a [github issue](https://github.com/minio/minio/issues).
+
+### Erasure Code (Multiple Drives / Servers)
+
+|Item|Specification|
+|:---|:---|
+|Maximum number of drives| 16|
+|Minimum number of drives| 4|
+|Read quorum| N/2|
+|Write quorum| N/2+1|
+
+### Browser Access
+
+|Item|Specification|
+|:---|:---|
+|Web browser upload size limit| 5GB|
+
+### Limits of S3 API
+
+|Item|Specification|
+|:---|:---|
+|Maximum number of buckets| no-limit|
+|Maximum number of objects per bucket| no-limit|
+|Maximum object size|	5 TB|
+|Minimum object size| 0 B|
+|Maximum object size per PUT operation| 5 GB|
+|Maximum number of parts per upload| 	10,000|
+|Part size|5 MB to 5 GB. Last part can be 0 B to 5 GB|
+|Maximum number of parts returned per list parts request|	1000|
+|Maximum number of objects returned per list objects request| 1000|
+|Maximum number of multipart uploads returned per list multipart uploads request| 1000|
+
+###  List of Amazon S3 Bucket API's not supported on Minio.
+
+- BucketACL (Use bucket policies instead)
+- BucketCORS (CORS enabled by default)
+- BucketLifecycle (Not required for Minio's XL backend)
+- BucketReplication (Use `mc mirror` instead)
+- BucketVersions, BucketVersioning (Use `s3git`)
+- BucketWebsite (Use `caddy` or `nginx`)
+- BucketAnalytics, BucketMetrics, BucketLogging (Use bucket notification APIs)
+- BucketRequestPayment
+- BucketTagging
+
+### List of Amazon S3 Object API's not supported on Minio.
+
+- ObjectACL (Use bucket policies instead)
+- ObjectTorrent
+- ObjectCopyPart