skipping playbook include due to conditional test failure

[Michael Baydoun]

Just upgraded to ansible 2.0 in our sandbox environment

In our site.yml we include a number of playbooks like so

- include: coolapp.yml

  when: groups.coolapp is defined

This allows our code to not fail if the production coolapp server hasn't been built yet.

Now in 2.0, these includes are all being skipped

"skipping playbook include 'coolapp.yml' due to conditional test failure"

Even running with -vvvv doesn't supply any additional information

Obviously we need to change our design for 2.0.  Suggestions?