Change the default API version used by the cli to v2

Since the v1 API is somewhat deprecated lets default to v2.

Resolves: rhbz#974043

Change-Id: Iece5428b2a47e63995e26f58347d4f7c8f8cb238
(cherry picked from commit 2bcc72c4855c7256b96ecc23fa45b3c585fd3a39)