Use polymath kitchen.yml

Author: taylorific

.github/workflows/polymath-ci.yml

@@ -49,6 +49,7 @@ jobs:
       env:
         CHEF_LICENSE: accept-no-persist
         CHEF_VERSION: 17.10.0
+        KITCHEN_YAML: .kitchen.polymath.yml
   shellcheck:
     runs-on: ubuntu-latest
     steps: