GCP Backend Service


### Add custom response header
```typegcloud beta compute backend-services update seongland-account --global \--custom-response-header X-Frame-Options:DENY \--custom-response-header X-XSS-Protection:1  \--custom-response-header X-Content-Type-Options:nosniff```

### Remove all header
```typegcloud beta compute backend-services update seongland-account \  --global \  --no-custom-request-headers```








