fix( gcp_chronicle sink): add content encoding header when compression is enabled

[ChocPanda]

Summary

Set the Content Encoding header when configuring compression on the gcp chronicle sink

Change Type

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

Is this a breaking change?

• Yes
• No

How did you test this PR?

Test using the config in the issue #22007

Does this PR include user facing changes?

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

Checklist

• Please read our Vector contributor resources.
• If this PR introduces changes Vector dependencies (modifies Cargo.lock), please
  run dd-rust-license-tool write to regenerate the license inventory and commit the changes (if any). More details here.

References

[bits-bot]

All committers have signed the CLA.

[pront]

This looks good to me. I don't have an E2E environment to confirm how adding this header affects downstream GCP. Did you have a chance to see if you get 200 responses with this fix?

[ChocPanda]

This looks good to me. I don't have an E2E environment to confirm how adding this header affects downstream GCP. Did you have a chance to see if you get 200 responses with this fix?

I have got an environment I can test in I'm struggling to get a complete build to test. I'll keep trying

[pront]

Test using the config in the issue #22007

Hi @ChocPanda, what I meant was, can you repeat what you described in the test plan?

Test using the config in the issue https://github.com/vectordotdev/vector/issues/22007

Also, a CI check is failing. Otherwise this is good to go!

[ChocPanda]

Hey @pront, sorry for the delay, I got taken out by the flu in the new year.

I can confirm that I have been able to build and test this change and it resolves the issue.

I tested the change by reproducing the issue by configuring gzip compression on a chronicle sink with the public vector 0.43.0 image and then resolved the issue by changing to an image built using this branch using the same vector config with gzip compression enabled