Use AndroidManifest to fill PackageInfo from apex

Some of the applicationInfo was hard coded while some packageInfo was
missing. Using AndroidManifest, they are completed as much as possible.
For remaining missing values, sane defaults are used where possible.

Bug: 124043099
Test: 1. added more assert rules in PackageParserTest.java
      2. atest PackageParserTest

Change-Id: I950283d822966ee2cb97f7bf13b7f55bb1227946