Add "com.android.packageinstaller" as recognized installer.

Previously we only have speical treatment for
"com.google.android.packageinstaller". On non-GMS devices, it is
"com.android.packageinstaller".

Bug: 150220594
Test: atest AppIntegrityManagerServiceImplTest
Change-Id: I0d2c49b1e852fbc08975242b4be75d36bdb3087d
(cherry picked from commit 340459929486e4916e8e5100f6519bcd80f071ac)
1 file changed