refs: https://github.com/TryGhost/DevOps/issues/78
Re-introduce parallel browser tests
These were adding in a previous PR, but the difference between local
running tests and using CI introduced failures.
Added additional fixes to ensure the Stripe API key is used in the CLI when running in CI.
refs: https://github.com/TryGhost/DevOps/issues/78
Instead of running a single instance of Ghost, we now run an instance of Ghost for each test worker.
This has the unfortunate effect that a test failing will close and restart a new instance of Ghost, but in general will be multiple times faster than sequential execution of tests.
- we should start to keep tests grouped by their area, so first we split
by Admin tests and then Portal tests, and within that we split into
setup/Tiers/Offers etc