RobotAppEyes.open_eyes_session should allow using a private Applitools Eyes cloud

[david-raymond]

Applitools Eyes defaults to Eyes server https://eyessdk.applitools.com. But Applitools supports private clouds which larger organizations can use.

RobotAppEyes does not allow specifying a private cloud when opening a Eyes session. It should.

We have manually modified the distribution package to support this. We have modified the RobotAppEyes/RobotAppEyes.py to add the new serverUrl named argument to open_eyes_session (with default value https://eyessdk.applitools.com) and pass this argument as the server_url argument when instanciating the Eyes object.

Could this improvement (or similar) be officially included in the Robot-AppEyes package?