Update tests to setup webdriver stuff in `jest-environment` and re-use one browser session instead of spawning one for each webdriver call to prevent creating too many BrowserStack sessions.
* Add default viewport meta tag (fixes#6698)
* Do not inject default viewport when rendering an AMP document
* Remove redundant viewport on error page
* Plumb withSideEffect() to pass through props, then use that for isAmp.
* Add tests for viewport meta tag.
* Fix linting
* Update dedupes test
* Break out client-navigation and rendering
test from basic test
* Try with parallelism dialed back to 3
* Update jest-junit for more compatible timings in CircleCI
* Bump to test timings
* Use filepath for suitename in jest-junit
* Store reports as artifacts
* Try using classname for timings
* Bump
* Remove reports from artifacts
