message: Update kokoro to pull latest version of cmake.
  Fixes
diff: @@ -7,6 +7,9 @@ echo "========================================"
  echo "Host adding PPAs"
  echo "----------------------------------------"
  sudo apt-add-repository 'ppa:ubuntu-toolchain-r/test'
  +sudo add-apt-repository 'deb https://apt.kitware.com/ubuntu/ xenial main'
  +wget -Okitware-key.asc https://apt.kitware.com/keys/kitware-archive-latest.asc
  +sudo apt-key add kitware-key.asc
  echo "----------------------------------------"
  echo
  