Fix: Multiple FDB issues

1. Fix: FDB update and delete operations return success even if data is not present.
2. Fix: Lazy object expired from cache resulting in failed operations.
3. Fix: Success on update operation in the pack even if object with a primary key is not present.
4. Add: Return updated records with error list in case of update.
5. Add: Return deleted records count with error list in case of delete.

merged

mentioned in commit 00c73b43