New DevicePolicyManager operations with safety checker for device and package management

Bug: 175245108
Test: m update-api
Test: atest CtsDevicePolicyManagerTestCases:DeviceOwnerTest#testDevicePolicySafetyCheckerIntegration
Change-Id: I0de9f3237abc9ba21c4ff8eeaca4797a52088f15
3 files changed