Review process around documenting and tracking Known Issues

[emanlove]

We have quite a few internal tests for which are tagged as Known Issue under one or another browser. There have also been some recognition of various issues known and tracked within various external organizations (Selenium project or browser WebDriver teams). It would be good if we document any known tickets to our internal tests so that as external issues get resolved we known we can adjust our tests.

This ticket is to look at those processes and see if we can improve upon the current situation.