fix: handle SSE in getObject() properly and have one source code. (#776)
fix: handle SSE in getObject() properly and have one source code. (#776)

Added below version of getObject() for completion.
```
public InputStream getObject(String bucketName, String objectName, Long offset, Long length,
                             ServerSideEncryption sse)
```
minio/minio-java,vadmeste/minio-java,balamurugana/minio-java