BUG-577: Extended BindingReflections to support detecting notification callbacks.

Change-Id: I406d92678b6784242d469d364053a588b76d1135
Signed-off-by: Tony Tkacik <ttkacik@cisco.com>
(cherry picked from commit 97bfd21a6410430ebb7828d1cd11863f8ec35b40)