Fix PackageManager did not recognize OTA when only upgrade product

- Introduce the PackagePartitions.FINGERPRINT to represent the
  fingerprint of the build and all system partitions. Using it to
  determine whether the system update has occurred.

- Update PackageManager relating modules to replace Build.FINGERPRINT
  with the PackagePartitions.FINGERPRINT.

Bug: 135224411
Test: atest PackagePartitionsTest
Change-Id: I4c6244cd71cd0954b4d551f62b81b6ce3e2c4b17