Updates for stable/mitaka

* Update reno to find notes on stable/mitaka.
* Update Gemfile to checkout puppet-openstack_spec_helper
  from stable/mitaka.
* Update .gitreview to use stable/mitaka by default.

Change-Id: I8fb09fd33c7f0bcf12d308d0bd3f041e3c7e44a1

.gitreview

@@ -2,3 +2,4 @@
 host=review.openstack.org
 port=29418
 project=openstack/puppet-aodh.git
+defaultbranch=stable/mitaka

Gemfile

@@ -15,7 +15,8 @@ group :development, :test do
   gem 'puppet-lint-numericvariable',          :require => 'false'
   gem 'json',                                 :require => 'false'
   gem 'puppet-openstack_spec_helper',
-      :git => 'https://git.openstack.org/openstack/puppet-openstack_spec_helper',
+      :git     => 'https://git.openstack.org/openstack/puppet-openstack_spec_helper',
+      :branch  => 'stable/mitaka',
       :require => false
 end
 

releasenotes/source/index.rst

@@ -8,6 +8,7 @@ Contents
 .. toctree::
    :maxdepth: 2
 
+   mitaka
    unreleased
 
 

releasenotes/source/mitaka.rst

@@ -0,0 +1,6 @@
+============================
+ Mitaka Series Release Notes
+============================
+
+.. release-notes::
+   :branch: origin/stable/mitaka