Updated so parameters indicate when they are optional.

bug: #1157020

Change-Id: I3a0594e18ba0d19821dddff8681531a7f32810bb
author: diane fleming
Added v3 WADL and code samples for Identity Service

bug: #1195376

Change-Id: I25146d825a3e425324253966069ff3963755105b
author: diane fleming