vpnaas: Do not install wrong backend package for OpenSwan driver

Currently the neutron::agents::vpnaas class installs LibreSwan (in
CentOS) or strongSwan (in Debian or Ubuntu) for the OpenSwan driver
but the OpenSwan driver only works with OpenSwan which is no longer
shipped. (That's why they developed different drivers for different
libraries).

This change drops installation of the wrong package and also deprecates
support for OpenSwan driver.

Change-Id: I158dd3411900241950ead9635bba4583eebcb983

manifests/agents/vpnaas.pp

@@ -53,12 +53,8 @@ class neutron::agents::vpnaas (
 
   case $vpn_device_driver {
     /\.OpenSwan/: {
-      Package['openswan'] -> Package<| title == 'neutron-vpnaas-agent' |>
-      package { 'openswan':
-        ensure => present,
-        name   => $::neutron::params::openswan_package,
-        tag    => ['openstack', 'neutron-support-package'],
-      }
+      warning("Support for OpenSwan has been deprecated, because of lack of \
+openswan package in distributions")
     }
     /\.LibreSwan/: {
       Package['libreswan'] -> Package<| title == 'neutron-vpnaas-agent' |>

manifests/params.pp

@@ -54,7 +54,6 @@ class neutron::params {
       $ovn_agent_package                  = 'openstack-neutron-ovn-agent'
       $dynamic_routing_package            = 'python3-neutron-dynamic-routing'
       $bgp_dragent_package                = 'openstack-neutron-bgp-dragent'
-      $openswan_package                   = 'libreswan'
       $libreswan_package                  = 'libreswan'
       $strongswan_package                 = 'strongswan'
       $metadata_agent_package             = false
@@ -101,7 +100,6 @@ class neutron::params {
       $dhcp_agent_package                 = 'neutron-dhcp-agent'
       $metering_agent_package             = 'neutron-metering-agent'
       $vpnaas_agent_package               = 'python3-neutron-vpnaas'
-      $openswan_package                   = 'strongswan'
       $libreswan_package                  = 'libreswan'
       $strongswan_package                 = 'strongswan'
       $metadata_agent_package             = 'neutron-metadata-agent'

releasenotes/notes/deprecate-vpnaas-openswan-driver-299a9173641152c2.yaml

@@ -0,0 +1,4 @@
+---
+deprecations:
+  - |
+    Support for OpenSwan VPNaaS driver has been derecated.

spec/classes/neutron_agents_vpnaas_spec.rb

@@ -48,14 +48,6 @@ describe 'neutron::agents::vpnaas' do
           :tag    => ['openstack', 'neutron-package'],
         )
       end
-
-      it 'installs openswan packages' do
-        should contain_package('openswan').with(
-          :ensure => 'present',
-          :name   => platform_params[:openswan_package],
-          :tag    => ['openstack', 'neutron-support-package'],
-        )
-      end
     end
 
     context 'with libreswan vpnaas driver' do
@@ -113,14 +105,12 @@ describe 'neutron::agents::vpnaas' do
         case facts[:os]['family']
         when 'Debian'
           {
-            :openswan_package     => 'strongswan',
             :libreswan_package    => 'libreswan',
             :strongswan_package   => 'strongswan',
             :vpnaas_agent_package => 'python3-neutron-vpnaas'
           }
         when 'RedHat'
           {
-            :openswan_package     => 'libreswan',
             :libreswan_package    => 'libreswan',
             :strongswan_package   => 'strongswan',
             :vpnaas_agent_package => 'openstack-neutron-vpnaas'