simpleperf: change the way running cts test.

simpleperf: change the way running cts test.

To test profiling debuggable apps, simpleperf cts test sets default
app package name for all tests. But it has below problems:
1. It is not explicit in the code of each test, thus harder to maintain.
2. It doesn't profile an app process, thus can't test profiling Java code.
3. Some tests are not suitable to run with app package name and have to
   disable app package name manually. This will be true for more tests
   if testing profileable apps.

So this CL changes the way running cts tests:
1. Remove default app package name, so all tests by default run in
   shell context.
2. Add explict tests to test profiling debuggable apps and profileable
   apps.

Bug: 118835348
Test: run CtsSimpleperfTestCases.

Change-Id: I7eacaf0dc66357dbb339a6e6d4c5ca694afa2619