create e2e test for Progressive cases

[juliev0]

Summary

We should be able to verify any core features not already being verified by functional test (or by the soon-to-be concurrent updates test (i.e. whatever is distinctly different from the other strategies such that it should be separate). I'm thinking it could include:

• failure case
• application of the "force promote" label on something which is failed to cause it to be successful

Anything else?

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