This change does a number of things:

1 - Modify IntegrityFileManagerTest to use Binary serializer.
2 - Fix a few minor indexing bugs that exist.
3 - Introduce a comprehensive test that verifies that the created
indexing file helps to parse the binary file correctly.
4 - Deletes a flaky test that is now covered by the tests in
IntegrityFileManager.

Bug: 145493956
Test: atest FrameworksServicesTests:IntegrityFileManagerTest
Change-Id: I37fcba81e45393b9768337de8c7744b226611e5f