Keystore 2.0 SPI: AndroidKeyStoreProvider loads keys from Keystore 2.0

This patch adjusts the AndroidKeyStoreProvider to register all services
with the correct packages names. And the utility functions load key
using the correct Keystore 2.0 methods.

Bug: 159476414
Test: None
Change-Id: I9268fd66d28e89e188e85991bcf90c7f19809232
2 files changed