Adding terraform fmt check to pipeline

Author: jnonino

.circleci/config.yml

@@ -5,6 +5,8 @@ jobs:
       - image: hashicorp/terraform:0.12.29
     steps:
       - checkout
+      - run:
+          command: terraform fmt -check -recursive -diff
       - run:
           working_directory: examples/test
           command: terraform init