message: ci: update expectd g++ version
  Risk Level: Low
  Testing: CI
diff: @@ -29,5 +29,5 @@ setcap cap_net_raw,cap_net_admin=eip /usr/sbin/tcpdump
  # virtualenv
  pip install virtualenv
  -EXPECTED_CXX_VERSION="g++ (Ubuntu 5.4.0-6ubuntu1~16.04.10) 5.4.0 20160609" ./build_container_common.sh
  +EXPECTED_CXX_VERSION="g++ (Ubuntu 5.4.0-6ubuntu1~16.04.11) 5.4.0 20160609" ./build_container_common.sh
  