This PR brings following changes
- Brings streaming support for mc uploads.
- Brings support for copying objects upto 5TiB
as a consequence of ComposeObject implementation
in minio-go.
This vendorization uses the new set of API changes which
we are brought in.
With this new change Bucket regions are handled transparently
without any region lookup or local map. This makes overall code
seamless and easy to use.
Fixes - #1541 (cp corruption while uploading large files to s3)
Fixes - #1542 (cp checkCopySyntax failed)
Fixes - #1537 (regions will be handled seamelessly now for all buckets)
Fixes - #1538 (fixes access control policy for google cloud storage)
Fixes - #1547 (session resume completes without copying all the files)
Fixes - #1559 (poor network connectivity, causes timing out)
