feat(http_client source): #23338 Enable AWS authentication for the http_client source.

[johannesfloriangeiger]

Summary

See title, enables AWS authentication for the http_client source.

Vector configuration

[sources.http_client]
type = "http_client"
endpoint = "<ENDPOINT>"
auth = {strategy = "aws", auth = {}, service = "aps"}
method = "POST"
headers.Content-Type = ["application/x-www-form-urlencoded"]
query.query = "up"

[sinks.blackhole]
type = "blackhole"
inputs = ["http_client"]

How did you test this PR?

Manually. Get yourself an AWS Account, create an Amazon Managed Service for Prometheus workspace, get the Endpoint - query URL and use it in the config above. Run Vector and see it working (and not failing with a 403 like the current version).

Change Type

• [ ] Bug fix
• [X] New feature
• [ ] Non-functional (chore, refactoring, docs)
• [ ] Performance

Is this a breaking change?

• [ ] Yes
• [X] No

Does this PR include user facing changes?

• [X] Yes. Please add a changelog fragment based on our guidelines.
• [ ] No. A maintainer will apply the no-changelog label to this PR.

References

• Closes: #23338

Notes

• Please read our Vector contributor resources.
• Do not hesitate to use @vectordotdev/vector to reach out to us regarding this PR.
• Some CI checks run only after we manually approve them.
  • We recommend adding a pre-push hook, please see this template.
  • Alternatively, we recommend running the following locally before pushing to the remote branch:
    • cargo fmt --all
    • cargo clippy --workspace --all-targets -- -D warnings
    • cargo nextest run --workspace (alternatively, you can run cargo test --all)
• After a review is requested, please avoid force pushes to help us review incrementally.
  • Feel free to push as many commits as you want. They will be squashed into one before merging.
  • For example, you can run git merge origin master and git push.
• If this PR introduces changes Vector dependencies (modifies Cargo.lock), please run cargo vdev build licenses to regenerate the license inventory and commit the changes (if any). More details here.

[pront]

Please resolve the merge conflicts and we will take a look

[johannesfloriangeiger]

Please resolve the merge conflicts and we will take a look

Thanks, merged master back into my branch - the reorg of the imports has broken git, I try to keep changes to existing code to a minimum in a PR.