Initial implementation always needed auth to make notification.
After going through sol005, understanding is auth can be optional and while subscribing
auth is kept optional. Also fixed some typos.
Change-Id: I89c5cf8f0efa9915b4daebb0f8e0d20d2861f71c Signed-off-by: K Sai Kiran <saikiran.k@tataelxsi.co.in>