Adjust stable branch logic for package-and-test

The package-and-test-ee configuration was modified to suceed even with
test failures, this makes the failures less noticeable and requires
adjusting in the tooling side.

This commit:
* Updates the name of the package-and-test to specifically search for
  'package-and-test'
* Makes a Danger warn message about the package-and-test to always be
  sent (it used to only be sent if the status was different than
success)