Filter package related info

This is one of many CLs to go through the PackageManager API surface
and filter access depending upon the requested information and the caller.
In this change, we filter ActivityInfo, ApplicationInfo and PackageInfo.

Bug: 35871369
Test: bit FrameworksCoreTests:android.content.pm.PackageManagerTests
Test: cts-tradefed run commandAndExit cts-dev -m CtsAppSecurityHostTestCases -t android.appsecurity.cts.EphemeralTest
Change-Id: Iaefd73f912ab1c7e1844e72625388455f783a362