[automerger skipped] Add VTS test for dynamic output shape. am: 4faf072e22 am: 40a888339e
am: 22c50d5e97 -s ours
am skip reason: change_id I4d26395ce443687ccbd47445b36e3356d70035cc with SHA1 929fd21e06 is in history

Change-Id: I185dd9837794991308529d82698f725f384dc2f8