Camera2: Tests: Fix CameraFrameTests to pass instead of failing and hanging.

Producer would wait for buffers to be released so it could dequeue into them.
Since the test never acquired/released buffers, it would run out, and then
the HAL would deadlock when trying to shutdown since the producing thread
would never finish.

Change-Id: I4222feeec7a3ffab4c243e12b7d9bd56364ad983
1 file changed