CI/scenarios: set NotificationDriver to 'noop'

CI/scenarios: set NotificationDriver to 'noop'

So we don't waste RabbitMQ resources since nothing will actually consume
the messages sent on the queue.

Note: we don't change scenario001, since it's a Telemetry scenario and
the services require notifications enabled.

Change-Id: I7d1d80da4eda7c0385461fe62b1d3038022973c6