ping/_composition: use latest release in interop-latest

[laurentsenta]

Update the interop (latest) tests so that we build & test:

• latest released go version
• latest released rust version
• current branch (rust or go)

(before we would test against master branch for each of these projects).

[laurentsenta]

@mxinden @marten-seemann

See related discussion in libp2p/rust-libp2p#2835

I still think we could test master branch together. As long as the go and rust libraries run the tests on every PR, testing master would let us test the interop for new features.

But I want to merge interop as soon as possible in rust and make sure we don't break go-libp2p, so let's have a follow-up discussion when interop test is running everywhere!

[marten-seemann]

Not sure I can review this, I don't understand what's going on in this TOML file.

[laurentsenta]

@marten-seemann No worries, I requested your review regarding the feature itself,

nothing much to see in the code, quick overview:

• we use go templates to simplify maintenance,
• with load_resource we load https://github.com/libp2p/test-plans/blob/master/ping/_compositions/go.toml in the template.

This PR replaces the use of the master version with the latest release registered in .groups (loaded from the go.toml file)

[mxinden]

From what I can tell, this looks good to me.

[laurentsenta]

test runs https://github.com/laurentsenta/test-plans/actions?query=branch%3Afeat%2Finterop-latest-tests-against-releases+created%3A%3E2022-09-06T14%3A55Z