test_proxy: Test ProxyProperty.
test_proxy: Test ProxyProperty.

Change-Id: Iee85725527602c5eea508a5f64d4b6378c9a9a33
Reviewed-on: http://gerrit.aldebaran.lan:8080/16941
Reviewed-by: mnottale <e3ccf1b6558404e921a21fa09cebb1153b50ec36@aldebaran-robotics.com>
Tested-by: mnottale <e3ccf1b6558404e921a21fa09cebb1153b50ec36@aldebaran-robotics.com>

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