Update for 3.0.0-rc2

Updated .gitreview to use stable/havana branch. Updated Modulefile
with current version and dependencies for new Heat and
Ceilometer releases.

Change-Id: Ied48ec68ace77fbdfa47216d8d32e531c320bcd3
Merge "Update for 3.0.0-rc2" into stable/havana
Release 3.0.0

Updated Modulefile for release 3.0.0.

Change-Id: I18ddb80fb97176a2b6614fd8d7c482eef0f59116
Pointing openstack modules to stable/havana.

Puppetfile was referencing master as opposed to
stable/havana.

Change-Id: I127072ebfcfdcdecd094ac29845e6b0b50a48d07
Merge branch 'stable/havana' of https://github.com/stackforge/puppet-openstack into havana