Onboard the shipper into the automated ingest performance testing framework

[cmacknz]

• Blocked by Beats started by agent do not respect the allow_older_versions: true configuration flag beats#34227
• Blocked by External=false does not build shipper in the distributions elastic-agent#2415

Create a test configuration in the ingest performance testing framework that starts the agent with the shipper enabled in the agent policy and configures Filebeat to ingest logs from a reference data file.

Document how to manually trigger test runs of this new configuration, where to find the produced data, and how to analyze it.

[jlind23]

@cmacknz This one should be worked on by @alexsapran right?
cc @pierrehilbert

[alexsapran]

I would say its a combination of the work that @leehinman is doing with the agent before I pick this up.
But I think yes, I will be working on this.

[jlind23]

@alexsapran adding this to Sprint 10 in order for now to keep some bandwidth.

[alexsapran]

Added a new issue to the mix, the agent is not building shipper by default.