add v4 test for fs-transformers (#660)
add v4 test for fs-transformers (#660)

* add v4 test for fs-transformers

* increase timeout for conv test

* update timeouts

Co-authored-by: Anisha Mazumder <6973b5af4ac5aeef864038f4345b1bd60120cb6a@google.com>
GoogleCloudPlatform/ml-testing-accelerators,GoogleCloudPlatform/ml-testing-accelerators