qiservice: display the id of the registered service
qiservice: display the id of the registered service

Change-Id: Ief928b7b8cd962610840e76809e49f4f1e18b54a
Reviewed-on: http://gerrit.aldebaran.lan:8080/5575
Reviewed-by: cgestes <ddb78fe00abb42f91254c16a0860e38eb0781789@aldebaran-robotics.com>
Tested-by: cgestes <ddb78fe00abb42f91254c16a0860e38eb0781789@aldebaran-robotics.com>

aldebaran/libqi-java,vbarbaresi/libqi,aldebaran/libqi,aldebaran/libqi,bsautron/libqi,aldebaran/libqi-java,aldebaran/libqi,aldebaran/libqi-java