Expand the step-style integration tests to make http frontend testing easier

[deads2k]

This adds the ability to easily test the cosmos DB entries that result from frontend requests. It is a necessary prereq to the data migration in #3651 where the records in cosmos will change.

[mbarnes]

There's a lot here and I think I'm gonna have to play with this to fully grok it. Fortunately I've got a couple bugs on my plate where I think I can leverage this test framework you've built. I didn't go through 100% of the code in detail, but I think I get the gist of it and it looks good to me.

/lgtm
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: deads2k, mbarnes

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[openshift-ci-robot]

/retest-required

Remaining retests: 0 against base HEAD 0a58d4d and 2 for PR HEAD 6245cb8 in total

[openshift-ci]

@deads2k: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-parallel	6245cb8	link	unknown	/test e2e-parallel

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[deads2k]

/retest