Add proto3 installation to jenkins Dockerfile. (#590)

[RFC=0000](https://github.com/googlecartographer/rfcs/blob/master/text/0000-proto3-transition.md)

cartographer_ros/cartographer_ros/node_main.cc

@@ -31,7 +31,8 @@ DEFINE_string(map_filename, "", "If non-empty, filename of a map to load.");
 DEFINE_bool(
     start_trajectory_with_default_topics, true,
     "Enable to immediately start the first trajectory with default topics.");
-DEFINE_string(save_map_filename, "",
+DEFINE_string(
+    save_map_filename, "",
     "If non-empty, serialize state and write it to disk before shutting down.");
 
 namespace cartographer_ros {

cartographer_ros/cartographer_ros/occupancy_grid_node_main.cc

@@ -194,7 +194,8 @@ void Node::PublishOccupancyGrid(const std::string& frame_id,
   occupancy_grid.info.origin.orientation.y = 0.;
   occupancy_grid.info.origin.orientation.z = 0.;
 
-  const uint32_t* pixel_data = reinterpret_cast<uint32_t*>(cairo_image_surface_get_data(surface));
+  const uint32_t* pixel_data =
+      reinterpret_cast<uint32_t*>(cairo_image_surface_get_data(surface));
   occupancy_grid.data.reserve(width * height);
   for (int y = height - 1; y >= 0; --y) {
     for (int x = 0; x < width; ++x) {

jenkins/Dockerfile.kinetic

@@ -37,6 +37,9 @@ COPY cartographer_rviz/package.xml catkin_ws/src/cartographer_ros/cartographer_r
 COPY scripts/install_debs.sh cartographer_ros/scripts/
 RUN cartographer_ros/scripts/install_debs.sh && rm -rf /var/lib/apt/lists/*
 
+# Install proto3.
+RUN /catkin_ws/src/cartographer/scripts/install_proto3.sh
+
 # Build, install, and test all packages individually to allow caching. The
 # ordering of these steps must match the topological package ordering as
 # determined by Catkin.