Add CTS a non regression unit test for bug #11673480 Address bar container padding screwed up on KOT43B

- add a unit test for checking padding after interleaved background/padding changes
- verified that the test was failing before the fix and passing after the fix

See commit 48d2bcf2ce2305356c5a4f0dfbb928dc5a4c8331 for the fix

Change-Id: I7f7b305236fa0e5d5ca6d8c965e879285ba33abd
3 files changed