rgw/cloud-restore [PART2] : Add Restore support from Glacier/Tape cloud endpoints
Reviewed-by: Adam Emerson <aemerson@redhat.com> Reviewed-by: Jiffin Tony Thottan <thottanjiffin@gmail.com> Reviewed-by: Matt Benjamin <mbenjamin@redhat.com> Reviewed-by: Daniel Gryniewicz <dang@redhat.com>