e2e test for Concurrent updates

[juliev0]

Summary

It would be great to have a test which tests concurrent requests for Numaflow Controller update, ISBService update, and Pipeline update, and maybe just make sure that everything is eventually updated and nothing left pausing.

Once this is working consistently well, let's expand it further to do the following:

• Numaflow Controller update, ISBService update and Pipeline update all at the same time (as written above)
• Immediately after the first ISBService and Pipeline updates are requested, make additional requests for other updates right after

Let's use "data loss" fields for one of the 2 ISBService updates, and let's use "data loss" fields for one of the 2 Pipeline updates.

Assuming we aren't testing this as part of a different test: Once that is working consistently well, let's expand it even further to include a change to the Pipeline which is a bad change and results in a Failed pipeline.

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