[8.19] (backport #10153) Rewrite the beats receiver log test using common tooling #10505
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What does this PR do?
Re-enables the integration test for comparing logs between beats processes and beats receivers and rewrites it to use normal integration test tooling, making it simpler and more observable:
elastic-agent logs
instead of capturing agent output directly.Why is it important?
This test should be enabled and reliable.
Checklist
[ ] I have made corresponding changes to the documentation[ ] I have made corresponding change to the default configuration files[ ] I have added tests that prove my fix is effective or that my feature works[ ] I have added an entry in./changelog/fragments
using the changelog toolRelated issues
This is an automatic backport of pull request #10153 done by [Mergify](https://mergify.com).