Add option to disable unsecure connection warning #119
Description
Currently, when creating a client (both http and grpc versions), it writes Api key is used with unsecure connection. warning to stderr.
There are cases when this is undesirable - e.g. my company restricts internal services like databases to a VPN, and we use unsecure connections between such services.
Having these warnings in the service logs is a bit annoying, so it would be nice to have an option like allowUnsecureConnection.