Enable swagger validation back as issue with it has been fixed upstream (#4673)

Author: lafriks

.drone.yml

@@ -75,7 +75,7 @@ pipeline:
       - make lint
       - make fmt-check
       - make swagger-check
-#      - make swagger-validate
+      - make swagger-validate
       - make misspell-check
       - make test-vendor
       - make build