focus: Added test cases for the existing issues/feature enhancement relate to focus

focus: Added test cases for the existing issues/feature enhancement relate to focus

Summary:
Below are the test cases to reproduce the exisiting issues with focus or feature enhancement
         1. Focus cut for the first/last item by scroller.
         2. Focus animation on the last item.
         3. Focus goes out of view point while scrolling.
         4. Focus moves but the area of focus does not change.
         5. No focus highlight on widget items.
         6. No animation on widget item.
         7. No focus movement between widget to widget items.

Reviewers: seoz, woohyun

CC: singh.amitesh
Differential Revision: https://phab.enlightenment.org/D502