Start adding support for v1.1

This patch adds basic support for the API version 1.1. It basically
re-uses the specs and implementations from v1 since the API hasn't
really changed much.

Future patches will add support for the new methods and other changes.

Partially-Implements blueprint: api-v1.1

Change-Id: I40d02d6c2d3b932725f35204708d79785f59116b
Merge "Start adding support for v1.1"