This patch is a follow-up patch for I9752d849aa0e6cf608db0def3ca89565cff4debc. * Add checking a message of an exception in the unit test * Add 'with' statement when opening a file * Fix descriptions in the release note Change-Id: I2c399490f320a202b41a8f8d36710a36621c4853 (cherry picked from commit47dc339ab9) (cherry picked from commit087af50d8a)