Fix rolling build (#772)

Signed-off-by: Antón Casas <[email protected]>

Author: 4ntn

scripts/create_firmware_ws.sh

@@ -102,6 +102,8 @@ popd >/dev/null
 . $(dirname $0)/clean_env.sh
 if [ $RTOS != "host" ]; then
     pushd $FW_TARGETDIR/$DEV_WS_DIR >/dev/null
+        # Fix failing build by ignoring rmw_test_fixture_implementation.
+        touch ros2/ament_cmake_ros/rmw_test_fixture_implementation/COLCON_IGNORE
         colcon build
         set +o nounset
         # source dev workspace