Alternative banners end to end QA test plan

[jilladams]

Brain dump to refine into an actual test plan:

• make sure we understand the order of ops for flippers and what will happen when each is on or off, across CMS feature toggles / vets-api flippers
• test what happens when a banner is published to a VAMC system, and showing / hiding it
• test situation updates: did we break them? they should still work the way they do in Prod
  • publish to Operating status page
  • send to GovDelivery
• test archiving: what happens
• Test the checkbox "not to home or operating status pages"
• test as the right kind of Editors, not just as admin

[laflannery]

Working test plan here