Deprecating the sessionId field in the authentication and configuration server protocol (since 0.4)

Before ContainerSSH 0.4 both the authentication server protocol and the configuration server protocol contained a field called sessionId which would include a self-generated ID for the session.

In ContainerSSH 0.4 we are introducing a new ID called connectionId which uniquely identifies the SSH connection across all ContainerSSH-related platforms (auth/config/audit log/etc).

The sessionId field is now deprecated and mirrors the contents of connectionId. The field will be removed in the future and auth / config server implementers should no longer rely on it.