Transform tests to 'setup-test' syntax

[evanfarina]

In addition to running the ember-qunit-codemode a few changes were necessary:

1. Add autoboot=false to environment.js. This ensures that duplicate apps are not created when running tests. I searched through a few others apps and read through a handful of issues on github before coming to the conclusion that this was an accepted best practice. If anyone feels that there is a more sustainable to solution to multiple container divs being created when running tests please let me know.
2. With the new syntax instance-initializers will now execute. This impacts how a handful of tests should be setup since manifests will now exist prior to each test running. Some tests had to be updated to look for different error messages being thrown while other tests required a deletion of setup code that was being used to generate manifests.
3. Added includePolyfill to ember-cli-build due to a regeneratorRuntime is not defined error being thrown.
4. Manually updated how the test runner is setup in tests/test-helper.js

[evanfarina]

@rwjblue I've spent the last day digging into the travis failures and what I've found is this:

• We're using a very old version of ember-cli-sauce
• We're using an old version of "sauce connect" -- this likely needs to be configured in the repo's settings (or the travis.yml file if you'd prefer)
• Updating to the latest version of ember-cli-sauce shows the same errors (tested locally)
• ember-cli-sauce has not been updated in over a year and seems to have problems with recent versions of ember-cli-qunit

[rwjblue]

Mind rebasing to get the CI fixes?

[evanfarina]

Mind rebasing to get the CI fixes?

Rebased. Had to make some adjustments to keep travis (saucie) happy.