Use 'password' auth_type by default

It's better to use 'password' keystone auth plugin by default
for the supporting v2 and v3 keystone API instead of ceilometer
legacy keystone loader which supports only v2.
Remove hard-coded API version from auth_url as well.

Actually this legacy loader has been deprecated in Mitaka and
has been already removed in Newton:
https://review.openstack.org/#/c/307053/

Change-Id: Iad68b6c1c29f9d9cd1b41ecc2898732fa030d401

manifests/agent/auth.pp

@@ -7,7 +7,7 @@
 #
 # [*auth_url*]
 #   (Optional) the keystone public endpoint
-#   Defaults to 'http://localhost:5000/v2.0'.
+#   Defaults to 'http://localhost:5000'.
 #
 # [*auth_region*]
 #   (Optional) the keystone region of this node
@@ -39,28 +39,28 @@
 #
 # [*auth_user_domain_name*]
 #   (Optional) domain name for auth user.
-#   Defaults to $::os_service_default.
+#   Defaults to 'Default'.
 #
 # [*auth_project_domain_name*]
 #   (Optional) domain name for auth project.
-#   Defaults to $::os_service_default.
+#   Defaults to 'Default'.
 #
 # [*auth_type*]
 #   (Optional) Authentication type to load.
-#   Defaults to $::os_service_default.
+#   Defaults to 'password'.
 #
 class ceilometer::agent::auth (
   $auth_password,
-  $auth_url                 = 'http://localhost:5000/v2.0',
+  $auth_url                 = 'http://localhost:5000',
   $auth_region              = $::os_service_default,
   $auth_user                = 'ceilometer',
   $auth_tenant_name         = 'services',
   $auth_tenant_id           = undef,
   $auth_cacert              = undef,
   $auth_endpoint_type       = undef,
-  $auth_user_domain_name    = $::os_service_default,
-  $auth_project_domain_name = $::os_service_default,
-  $auth_type                = $::os_service_default,
+  $auth_user_domain_name    = 'Default',
+  $auth_project_domain_name = 'Default',
+  $auth_type                = 'password',
 ) {
 
   if ! $auth_cacert {

releasenotes/notes/password_auth_type-810a86921a846b2f.yaml

@@ -0,0 +1,5 @@
+---
+upgrade:
+  - Update auth_type value to 'password' to use keystone auth
+    plugin by default instead of ceilometer legacy keystone loader.
+  - Remove hard-coded API version from auth url

spec/classes/ceilometer_agent_auth_spec.rb

@@ -7,7 +7,7 @@ describe 'ceilometer::agent::auth' do
   end
 
   let :params do
-    { :auth_url         => 'http://localhost:5000/v2.0',
+    { :auth_url         => 'http://localhost:5000',
       :auth_region      => '<SERVICE DEFAULT>',
       :auth_user        => 'ceilometer',
       :auth_password    => 'password',
@@ -18,16 +18,16 @@ describe 'ceilometer::agent::auth' do
   shared_examples_for 'ceilometer-agent-auth' do
 
     it 'configures authentication' do
-      is_expected.to contain_ceilometer_config('service_credentials/auth_url').with_value('http://localhost:5000/v2.0')
+      is_expected.to contain_ceilometer_config('service_credentials/auth_url').with_value('http://localhost:5000')
       is_expected.to contain_ceilometer_config('service_credentials/region_name').with_value('<SERVICE DEFAULT>')
       is_expected.to contain_ceilometer_config('service_credentials/username').with_value('ceilometer')
       is_expected.to contain_ceilometer_config('service_credentials/password').with_value('password')
       is_expected.to contain_ceilometer_config('service_credentials/password').with_value(params[:auth_password]).with_secret(true)
       is_expected.to contain_ceilometer_config('service_credentials/project_name').with_value('services')
       is_expected.to contain_ceilometer_config('service_credentials/ca_file').with(:ensure => 'absent')
-      is_expected.to contain_ceilometer_config('service_credentials/user_domain_name').with_value('<SERVICE DEFAULT>')
-      is_expected.to contain_ceilometer_config('service_credentials/project_domain_name').with_value('<SERVICE DEFAULT>')
-      is_expected.to contain_ceilometer_config('service_credentials/auth_type').with_value('<SERVICE DEFAULT>')
+      is_expected.to contain_ceilometer_config('service_credentials/user_domain_name').with_value('Default')
+      is_expected.to contain_ceilometer_config('service_credentials/project_domain_name').with_value('Default')
+      is_expected.to contain_ceilometer_config('service_credentials/auth_type').with_value('password')
     end
 
     context 'when overriding parameters' do