Bug Fixes and More Fine Tuning of Yang Models

- Further decoupling of SFF and SF
- Fixed bugs as part of moving to new DataBroker
- Fixed bootstrap files to account for modified Yang models
- Fixed RPCs accordingly

Change-Id: Icf7ae1c4d645696044cc5564c9e16eb45970e0c9
Signed-off-by: Reinaldo Penno <rapenno@gmail.com>