simpleperf: use app_profiler.py in inferno.

Also add tests to check if we can run inferno successfully.
More tests will be added to check report results of inferno.

Bug: http://b/64035530
Test: run test.py.
Change-Id: Ie5dd1f5cb47c8c7a2ae68f8614cf81b68e3c7dbf
5 files changed