Add checks plugin to check pipeline

This adds the checks plugin to the check pipeline.  Alternatively,
this change could be made in the checks repo itself in the .zuul.yaml
file. But we rather prefer to have all plugin pipelines in one single
place.

Change-Id: I18b9b39761703d8d0726c5a4d9e3365d60a8a7d8
1 file changed
tree: e511695b1df2a19a22b33f64f45f60535ca05ba2
  1. playbooks/
  2. zuul.d/
  3. .gitreview
  4. LICENSE
  5. README