Revert "Do not run acceptance tests if unit tests fail"

This reverts commit 1c6f3f515e09901d08e7c5d8e12ce160d656ddf3.
By default, skip acceptance tests if unit tests fail

There is no point in running acceptance tests if the very basic
functionality covered by unit tests is broken.

Moved previous behavior to a new task test:all that can be used when we
finally adopt a CI solution.