Update Ambari repo URL for 0.2.2 release

Updated the location of the Ambari repo to the latest version of Ambari

Fixes: bug #1222572
Change-Id: I6c06d31a68ee841763496ae3e4b157ba709757ec
(cherry picked from commit 6d425a2e278f49546328050e468e3a559df859fa)
Merge "Update Ambari repo URL for 0.2.2 release" into stable/0.2