[Fleet] Fix concurent package policies create

[nchaulet]

Description

Resolve elastic/elastic-agent#4102

Fix concurrent package policies create, when two custom log package policies are create at the same time it happen to have a conflict where we try to retrieve the package from ES before it's installed this should fix it.

Todo

• add some test
• check for side effects

[apmmachine]

🤖 GitHub comments

Expand to view the GitHub comments

Just comment with:

• /oblt-deploy : Deploy a Kibana instance using the Observability test environments.
• /oblt-deploy-serverless : Deploy a serverless Kibana instance using the Observability test environments.
• run elasticsearch-ci/docs : Re-trigger the docs validation. (use unformatted text in the comment!)

[nchaulet]

/ci

[nchaulet]

/ci

[elasticmachine]

Pinging @elastic/fleet (Team:Fleet)

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: f302c9a

Metrics [docs]

✅ unchanged

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

cc @nchaulet

[juliaElastic]

LGTM

[juliaElastic]

Should we backport this to 8.13 branch?

[nchaulet]

Should we backport this to 8.13 branch?

As we are at the end of the 8.13 cycle it may be safer to not backport it, this touch a very critical part of the code and while I tested it carefully and we have some automated tests, I feel like releasing it for 8.14 will be safer