Add memcached_servers for keystone authtoken

This change allows a user to manage the memcached servers for
keystone_authtoken.

Change-Id: Ic3963631caab327c1f44819be9eb14d0173085a2

manifests/server.pp

@@ -72,6 +72,11 @@
 #   (optional) Connection url for the neutron database.
 #   (Defaults to undef)
 #
+# [*memcached_servers*]
+#   (optinal) a list of memcached server(s) to use for caching. If left
+#   undefined, tokens will instead be cached in-process.
+#   Defaults to $::os_service_default.
+#
 # [*sql_connection*]
 #   DEPRECATED: Use database_connection instead.
 #
@@ -355,6 +360,7 @@ class neutron::server (
   $ensure_fwaas_package             = false,
   $vpnaas_agent_package             = false,
   $service_providers                = $::os_service_default,
+  $memcached_servers                = $::os_service_default,
   # DEPRECATED PARAMETERS
   $log_dir                          = undef,
   $log_file                         = undef,
@@ -514,6 +520,10 @@ class neutron::server (
       }
     }
 
+    neutron_config {
+      'keystone_authtoken/memcached_servers': value => join(any2array($memcached_servers), ',');
+    }
+
     if $auth_password {
 
       warning('identity_uri, auth_tenant, auth_user, auth_password, auth_region configuration options are deprecated in favor of auth_plugin and related options')

releasenotes/notes/keystone-authtoken-memcached-cf70cebad8b21492.yaml

@@ -0,0 +1,4 @@
+---
+fixes:
+  - Adds the ability to manage the memcached servers for
+    keystone_authtoken in neutron::server

spec/classes/neutron_server_spec.rb

@@ -63,6 +63,7 @@ describe 'neutron::server' do
       is_expected.to contain_neutron_config('keystone_authtoken/admin_user').with_ensure('absent');
       is_expected.to contain_neutron_config('keystone_authtoken/admin_password').with_ensure('absent');
       is_expected.to contain_neutron_config('keystone_authtoken/identity_uri').with_ensure('absent');
+      is_expected.to contain_neutron_config('keystone_authtoken/memcached_servers').with_value('<SERVICE DEFAULT>');
     end
 
     it 'installs neutron server package' do
@@ -356,6 +357,23 @@ describe 'neutron::server' do
     end
   end
 
+  describe "with keystoneauth memcache servers" do
+    let :facts do
+      @default_facts.merge(test_facts.merge({
+         :osfamily => 'RedHat',
+         :operatingsystemrelease => '7'
+      }))
+    end
+    before do
+      params.merge!({
+        :memcached_servers => '1.1.1.1:11211'
+      })
+    end
+    it 'configures keystone authentication memached servers' do
+        is_expected.to contain_neutron_config('keystone_authtoken/memcached_servers').with_value('1.1.1.1:11211');
+    end
+  end
+
   describe "with custom auth region" do
     let :facts do
       @default_facts.merge(test_facts.merge({