Add DisplayTest to FrameworksTestsFilter

Bug: 181860668
Test: atest FrameworksMockingCoreTests:android.view.DisplayTest
Test: adb shell am instrument -w \
     -e filter com.android.server.wm.test.filters.FrameworksTestsFilter \
     -e selectTest_verbose true \
     com.android.frameworks.mockingcoretests/androidx.test.runner.AndroidJUnitRunner
Change-Id: Ie8a9a932f7ee8d3fb24cb454dd63cb0e559617ef