Support for global Google APIs for endpoint propagation through Network

## Feature Feature Support for [global Google APIs for endpoint propagation through Network Connectivity Center](https://docs.cloud.google.com/network-connectivity/docs/network-connectivity-center/concepts/psc-propagated-connection-overview#access-gapi-through-psc) is available in[Preview](https://cloud.google.com/products#product-launch-stages). For information about the new quota for propagated global Google APIs, see[NCC quotas](https://docs.cloud.google.com/network-connectivity/docs/network-connectivity-center/quotas#general-ncc-quotas).