S3 presigned choose between path and virtual host style

[matthias-schoeneich]

Currently aws-erlang does path-style addressing for S3 presigned URLs - except for region <<"local">> - where virtual-host style addressing is being used.

AWS on the other side is pushing towards virtual-host style addressing. So newer features are not available via path-style addressing.

My personal use case are S3 Object Lambda's, which - when addressed via path-style - just return a http redirect.

So this PR introduces the possibility to choose from the two options. To not introduce breaking changes, it defaults to path-style addressing while preserving the "hacks" for region <<"local">>.

To make review easier, there are two commits

• 6f3d601 - which just documents current behavior as eunit tests
• da23fb5 - which is the actual change

[onno-vos-dev]

Could consider adding: -deprecated([{make_presigned_v4_url,5,next_major_release}]). and fully remove it on the next major version.

I'll leave this open for a day in case you want to make that change otherwise I'll merge, tag, release-train 👍

[onno-vos-dev]

Thank you @matthias-schoeneich for the PR! Merged and tagged as 1.0.2 👌 👍 The release to hex failed to publish the docs. Will look into it but the package is there at least :-)