It will slow down the whole test suite (because it'll use doctrine command).
Remove unecessary `KernelTestCase`.
Also rename `AbstractControllerTest` to `WallabagApiTestCase` for consistency.
It takes ages to process and most of the time the build fail for "execution time" too long.
Too much time already burned to investigate it.
We'll investigate later, it's not a priority atm.
They are god damn too long to execute because it launch external command (mostly related to doctrine).
So I've added a PHPUnit @group (`command-doctrine`) so that we can avoid launching them on a regular basis, like that:
`phpunit --exclude-group command-doctrine`