Add ignored controls metadata.

Ignored controls are optioned controls where the value
set by the user is tracked, but doesn't actually matter.

BUG: 30140438
Change-Id: I45819c3c6c855922418f76fd34309a44660fc3f0
TEST: unit tests pass
3 files changed
tree: 19539762ae2fde9cae804dedff86c8e73d0a1aab
  1. modules/