Released a Preview version of HTTP(S) Load balancing for API Gateway

## Announcement Released a Preview version of HTTP(S) Load balancing for API Gateway. The integration of [Google Cloud HTTP(S) Load Balancing](https://cloud.google.com/load-balancing/docs/https) support for API Gateway enables your serverless backends to take advantage of all the features provided by Cloud Load Balancing. By combining API Gateway and HTTP(S) Load Balancing using a [serverless Network Endpoint Group (serverless NEG)](https://cloud.google.com/load-balancing/docs/negs/), you can: * Host gateways with custom branded domains * Configure TLS for gateways using certificates issued by a preferred certificate authority * Create a common entry point for a gateway routing to multiple backends * Deploy gateways in multiple geographic regions for high availability without managing URLs for each region To provide feedback or to log issues with this release, see [Getting support](https://cloud.google.com/api-gateway/docs/getting-support).