audiopolicymanager_tests: add execution tracing

Add Started / Finished log entries for each test execution.

Flag: EXEMPT bugfix
Bug: 360937480
Test: atest audiopolicy_tests
Merged-In: Ib80459b1379e5bbe3446feddd2ae2a922345f1ff
Change-Id: Ib80459b1379e5bbe3446feddd2ae2a922345f1ff
4 files changed