Added test for user-specified focus order with duplicate ids

Usually duplicate ids are not allowed, however, if you inflate
the same layout multiple times, you can get them (most commonly
in AdapterViews).

Bug: 32647147
Test: FocusFinderTest#testDuplicateId
Change-Id: I101b278ace338f7f3466108e893a9459962d71e9
3 files changed