In order to benefit from the recently added gtest-parallel script's retry capabilities ( issue 718339 ), we should make sure all our tests use it, even if they don't run in parallel.

Running in a single thread can be accomplished by passing --workers=1 to gtest-parallel.
Preferably the script should output the logs similar to how running the test without the wrapper in this special case.

Tests that are currently not using gtest-parallel are running on the bare-metal bots. I suggest we should migrate the following:
* video_capture_tests
* voe_auto_test 

Doing that will also enable us gathering flakiness data for them, right?