Put back AutomationFeature into Nuxeo SDK

Since NXP-11291, when using Nuxeo IDE with Nuxeo 6.0 HF12 SDK or HF 13 SDK and writing a unit test, the AutomationFeature cannot be resolved anymore.

The class actually exists, but the SDK currently includes a bad artifact or misses the right one: it contains automation-test jar with a test classifier instead of the jar including the actual classes.

Workaround : copy jar into SDK folder and update properties file.