Enable Checkstyle preupload hook for certain frameworks/base directories.

Enables Checkstyle preupload hook for the following directories:
- core/java/android/animation/
- core/java/android/text/
- core/java/android/view/
- core/java/android/transition/
- core/java/android/widget/

Test: tested manually uploading a CL that contained many changes
      to directories outside of the listed ones and checkstyle did
      not complain about those.

Change-Id: I795ba478fad7af124c43ca1e18d51b33d7800976