[Bug] Health proto clashes with grpc_health library

[cretz]

Describe the bug

When importing grpc_health.v1 from the gRPC library you get:

TypeError: Conflict register for file "health/v1/health.proto": grpc.health.v1.HealthCheckRequest is already defined in file "grpc_health/v1/health.proto". Please fix the conflict by adding package name on the proto file, or use different name for the duplication.

We need to change out health proto package so it doesn't clash with gRPC's.