setup the ros pkg config environnement to find urdfdom from ros-hydro

travis_custom/custom_build

@@ -7,8 +7,13 @@ set -v
 
 # Setup environment variables.
 export CMAKE_ADDITIONAL_OPTIONS=" ${CMAKE_ADDITIONAL_OPTIONS} -DBUILD_UNIT_TESTS=\"ON\""
+
 export PKG_CONFIG_PATH="${PKG_CONFIG_PATH}:/opt/openrobots/lib/pkgconfig"
 export LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:/opt/openrobots/lib"
+
+export PKG_CONFIG_PATH="${PKG_CONFIG_PATH}:/opt/ros/hydro/lib/pkgconfig"
+export LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:/opt/ros/hydro/lib"
+
 # Setup environment variables.
 . ./.travis/run ../.travis/build