Standard GRPC health check endpoint

[Dreamsorcerer]

When deploying Gubernator with Nomad, we are getting an error that it can't find the health check endpoint for the GRPC service.

Apparently, there is a standard way to do a GRPC health check endpoint.
Would it be possible to adopt this, so that deployment tools can use it automatically?

It appears to be documented here: https://github.com/grpc/grpc/blob/master/doc/health-checking.md

[Baliedge]

Sounds like a great idea for a new feature. PRs are welcome.