Ensure Automation protocol compatibility across evolutions

We are about to do some changes in Automation protocol to allow better handling of complex types and properties.

Maintaining the java Automation Client aligned with the server is not an issue since client and server are developed and tested together.

But for JS, .Net, Php, Python clients that's an other story.

NB : At some point , we may choose to break compatibility and manage several versions of the protocol, but we must at least be able to detect when we change something that may break.

One option could be to replay a set of recorded http calls.