Audio hal VTS: generate names for parametrized tests

The gtest dashboard only shows test names, not their parameters.
This mean that parametrized tests are names 0,1,2...
Thus when one test fails, the dashboard info is not very useful.

This patch appends the audio config to the test name.

Test: run the test on target
Bug: 34170075
Change-Id: I77090a3a17e4a3e97ecb72a8a89ad2d88626d96f
Signed-off-by: Kevin Rocard <krocard@google.com>