Url: more const in tests
Url: more const in tests

Change-Id: I92706c2b22751e6286a99b68a812d3e32d35614c
Reviewed-on: http://gerrit.aldebaran.lan/69573
Reviewed-by: jlamotte <70353e7b0c7d18b7fc75605daf0ccba69fcd3222@aldebaran.com>
Tested-by: vpaleologue <cb19838a79eb484e12a6960acfbf7c16dfdb80d9@aldebaran-robotics.com>

aldebaran/libqi,aldebaran/libqi,aldebaran/libqi