Add CTS to test launch/access activity on physical private display

Test that launch/access an activity on a private display without permission is
not allowed; test can access an activity on private display with
internal permission

Bug: 133794475
Test: - Configure hawk_md to have private display, device/panasonic/hawk/multi-display/overlay/frameworks/base/core/res/res/values/config.xml should be updated with following changes:
<integer-array translatable="false" name="config_localPrivateDisplayPorts"><item>1</item><item>2</item></integer-array>
(1 and 2 are port addresses for secondary displays)
- Run: atest CtsWindowManagerDeviceTestCases:MultiDisplayPhysicalDisplayTests
- All tests should pass

Change-Id: Ib2cfad89e278c2a93be3243259e0ea6650524aea
3 files changed