3-button mode tests for rotation tests

Tests now run in:
  - Portrait to Landscape + 3 Button
  - Landscape to Portrait + 3 Button
  - Portrait to Landscape + Gestural
  - Landscape to Portrait + Gestural

Test: atest FlickerTests
Bug: 167521849
Change-Id: I997c7af9c4895452aafb1f8e3b13b15168697963