system wide replay CI test

[dagar]

We need a simple replay test in the CI system primarily to prevent EKF replay from breaking, but also to demonstrate its usage.

@priseborough @bkueng any suggestions? We can store a known good log on S3 or fetch directly from flight review.

Later this can be expanded for EKF testing.

Questions

• what sample data do we use and how do we update it?
• how do we verify it worked as expected?

[hamishwillee]

As an aside, this test should be documented/linked from https://dev.px4.io/en/debug/system_wide_replay.html#ekf2-replay

[stale[bot]]

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