Fix PackageSetInstallerTest for multi-user

Exempt-From-Owner-Approval: Added owners.

The dumpsys output can include multiple users, and the test did not
check for a specific user when parsing the permission state.

Using the structured proto dump was considered, but permissions are
not currently part of it, and would not be sufficient to fix the test
for existing devices.

Bug: 169270298

Test: atest android.appsecurity.cts.PackageSetInstallerTest

Change-Id: I3988c833ef4716109a33e8754b055a5482bfa275
2 files changed