Issue description

grpc and related python packages should always have compatible versions, otherwise things could break. For now there are only comments regarding this but no tests that verifies compatibility. Ideally, the tests would be added to the individual python packages and also to grpc so that they are run if either package changes.

The following python packages need tests to verify compatibility with grpc:

• pythonPackages.grpcio
• pythonPackages.grpcio-channelz
• pythonPackages.grpcio-health-checking
• pythonPackages.grpcio-reflection
• pythonPackages.grpcio-status
• pythonPackages.grpcio-status
• pythonPackages.grpcio-testing
• pythonPackages.grpcio-tools