.travis.sh: debian/sid rebuild cv-bridge deb

debian/sid fails with

[ 57%] Linking CXX executable devel/lib/opencv_apps/adding_images
/usr/bin/cmake -E cmake_link_script CMakeFiles/adding_images_exe.dir/link.txt --verbose=1
/usr/bin/ld: cannot find -lopencv_barcode: No such file or directory
collect2: error: ld returned 1 exit status

-lopencv_barcode comes from cv_bridge, so we need to rebuild deb file again

.travis.sh

@@ -216,6 +216,14 @@ elif [ "$TEST" == "debian-unstable" ]; then
     apt update
     apt-get -y build-dep ros-opencv-apps
 
+    # rebuild cv-bridge to fix '/usr/bin/ld: cannot find -lopencv_barcode: No such file or directory'
+    travis_time_start rebuild_cv_bridge_deb.script
+    apt source ros-vision-opencv
+    apt-get -y build-dep $(find -type d -iname "ros-vision-opencv*")
+    (cd $(find -type d -iname "ros-vision-opencv*") && dpkg-buildpackage -b -us -uc)
+    dpkg -i *.deb
+    travis_time_end
+
     travis_time_start build_debian_unstable.script
     cd $CI_SOURCE_PATH
     mkdir build