Release version 1.31.1

Release version 1.31.1

Changes:
 - Fix smoke-test functions for rollback cases
 - Add smoke-util functions to check existance of shared/data
 - Fix StepUpdateStorageDirectories
 - Change header path to be included
 - Change the way to delete "shared/data" directory
 - Fix FindRecoveryFile
 - Fix static analysis issue
 - Add null checking before setting cleanup flag
 - Fix StepRecoverChangeOwner
 - Fix StepRecoverStorageDirectories

Change-Id: Iec2faac95ac9cc7123c237ecc6c4c2c47733d3e8
Signed-off-by: Ilho Kim <ilho159.kim@samsung.com>