Enforce code format including tests

Author: zliang-akamai

.github/workflows/ci.yml

@@ -24,6 +24,11 @@ jobs:
       - name: Run tidy
         run: make tidy
 
+      - name: Run formatter
+        run: |
+          go install mvdan.cc/gofumpt@86bffd62437a3c437c0b84d5d5ab244824e762fc
+          gofumpt -l -w .
+
       - name: Fail if changes
         run: git diff-index --exit-code HEAD