Initial CTS tests for DPM / driving safety integration.

Also set checkstyle hook for hostsidetests/devicepolicy.

Test: atest \
      CtsDevicePolicyManagerTestCases:DeviceOwnerTest#testDevicePolicySafetyCheckerIntegration \
      CtsDevicePolicyManagerTestCases:ProfileOwnerTest#testDevicePolicySafetyCheckerIntegration

Bug: 172376923

Change-Id: I877cd948b51032d0581cd41512a27a9a3a98a333
9 files changed