Add API to set device owner type for a managed device

With this API, it will allow to customize Device Owner warning messages
on a financed device.

Bug: 173826319
Bug: 158157476
Bug: 180521289
Test: m -j64
Test: Used a test device that is registered via ZT
Test: atest FrameworksServicesTests:com.android.server.devicepolicy.OwnersTest
Test: atest FrameworksServicesTests:com.android.server.devicepolicy.DevicePolicyManagerTest

Change-Id: I97a2e9c4626d3cd9d01b19ce1d233be5fbd7377a