Move more fields to InstallSource.

Move installerPackageName and isOrphaned into InstallSource. Remove
now-redundant uses of installerPackageName in various helper
classes. Make InstallSource non-null everywhere.

Bug: 134746019
Test: atest -p services/core/java/com/android/server/pm
Change-Id: If4583ede7a4d67425320a240f1c6874b4b267df3
10 files changed