tests: Adds a test for an advertised function returning a Future in an AnyReference.
tests: Adds a test for an advertised function returning a Future in an AnyReference.

Change-Id: I2c1e01408b8d2010d8fd4397b8cdd17f9bd2a478
Reviewed-on: http://gerrit.aldebaran.lan/91566
Reviewed-by: vincent.palancher <f8ff75e1c61314c499fafa8de0d9e004e87e66b0@external.softbankrobotics.com>
Reviewed-by: jmonnon <8898eaf233516e520f996a244ca8a12d20f948b1@aldebaran.com>
Reviewed-by: jlamotte <70353e7b0c7d18b7fc75605daf0ccba69fcd3222@aldebaran.com>
Tested-by: vincent.palancher <f8ff75e1c61314c499fafa8de0d9e004e87e66b0@external.softbankrobotics.com>

aldebaran/libqi,aldebaran/libqi,aldebaran/libqi