feat(providers): add AWS IAM as a credential provider for s3 storage (#2213) (#2222)
feat(providers): add AWS IAM as a credential provider for s3 storage (#2213) (#2222)

* add AWS IAM as a credential provider for s3 storage

* Update s3_storage.go

Co-authored-by: Jarek Kowalski <8e6843026595952a9e15c539c2265771284f89b1@jkowalski.net>

Co-authored-by: Sidhartha Mani <daffbef91ee156b90fd01ecb2fd5d3edcd660331@users.noreply.github.com>
kopia/kopia,kopia/kopia,kopia/kopia,kopia/kopia