Send DEVICE_OWNER_CHANGED to manifest receivers in background

- DEVICE_OWNER_CHANGED is an event that could happen maximum of 2 times
after device factory reset. The event rarely
happens, and it shouldn't affect any system health

Fix: 34446573
Test: adb shell am instrument -w -e class
com.android.server.devicepolicy.DevicePolicyManagerTest
com.android.frameworks.servicestests/android.support.test.runner.AndroidJUnitRunner

Change-Id: Ic1af2016f590e1200bb3e56f63caa0e0b12f71f8