Switch to use keystone v3

Keystone v2 api's are removed in [1], so it's required
to use keystone v3 otherwise all requests fallbacks to
keystone v2.0 and fails.

[1] https://review.openstack.org/#/c/499783/

Change-Id: Ie2794d5fb12785e7c620c4ec8e3ccc2fb64d9e3b
Closes-Bug: #1723838

manifests/auth.pp

@@ -49,7 +49,7 @@
 #
 class aodh::auth (
   $auth_password,
-  $auth_url           = 'http://localhost:5000/v2.0',
+  $auth_url           = 'http://localhost:5000/v3',
   $auth_region        = 'RegionOne',
   $auth_user          = 'aodh',
   $auth_tenant_name   = 'services',

spec/acceptance/aodh_wsgi_apache_spec.rb

@@ -51,7 +51,7 @@ describe 'basic aodh' do
         ssl => false,
       }
       class { '::aodh::auth':
-        auth_url      => 'http://127.0.0.1:5000/v2.0',
+        auth_url      => 'http://127.0.0.1:5000/v3',
         auth_password => 'a_big_secret',
       }
       class { '::aodh::client': }

spec/classes/aodh_auth_spec.rb

@@ -3,7 +3,7 @@ require 'spec_helper'
 describe 'aodh::auth' do
 
   let :params do
-    { :auth_url         => 'http://localhost:5000/v2.0',
+    { :auth_url         => 'http://localhost:5000/v3',
       :auth_region      => 'RegionOne',
       :auth_user        => 'aodh',
       :auth_password    => 'password',
@@ -14,7 +14,7 @@ describe 'aodh::auth' do
   shared_examples_for 'aodh-auth' do
 
     it 'configures authentication' do
-      is_expected.to contain_aodh_config('service_credentials/auth_url').with_value('http://localhost:5000/v2.0')
+      is_expected.to contain_aodh_config('service_credentials/auth_url').with_value('http://localhost:5000/v3')
       is_expected.to contain_aodh_config('service_credentials/region_name').with_value('RegionOne')
       is_expected.to contain_aodh_config('service_credentials/project_domain_id').with_value('default')
       is_expected.to contain_aodh_config('service_credentials/user_domain_id').with_value('default')