networking-arista: Ensure the plugin package is installed

Arista plugin requires the python3-networking-arista package. This
change ensures the plugin package is installed when using the Arista
plugin.

Closes-Bug: #1968471
Change-Id: I58cf4bc3a2a3c38216b6ffadafe2fcb36e9c4a3a

manifests/params.pp

@@ -30,6 +30,7 @@ class neutron::params {
   $sfc_package                 = 'python3-networking-sfc'
   $user                        = 'neutron'
   $group                       = 'neutron'
+  $arista_plugin_package       = 'python3-networking-arista'
 
   if($::osfamily == 'Redhat') {
     $package_name                       = 'openstack-neutron'

manifests/plugins/ml2/arista.pp

@@ -42,6 +42,12 @@
 #   (optional) Defines if hostnames are sent to Arista EOS as FQDNS
 #   Defaults to $::os_service_default
 #
+# [*package_ensure*]
+#   (optional) The intended state of the python-networking-baremetal
+#   package, i.e. any of the possible values of the 'ensure'
+#   property for a package resource type.
+#   Defaults to 'present'
+#
 class neutron::plugins::ml2::arista(
   $eapi_host,
   $eapi_username,
@@ -49,7 +55,7 @@ class neutron::plugins::ml2::arista(
   $region_name    = $::os_service_default,
   $sync_interval  = $::os_service_default,
   $use_fqdn       = $::os_service_default,
-
+  $package_ensure = 'present'
 ) {
 
   include neutron::deps
@@ -63,4 +69,10 @@ class neutron::plugins::ml2::arista(
     'ml2_arista/sync_interval': value => $sync_interval;
     'ml2_arista/use_fqdn'     : value => $use_fqdn;
   }
+
+  package { 'python-networking-arista':
+    ensure => $package_ensure,
+    name   => $::neutron::params::arista_plugin_package,
+    tag    => ['openstack', 'neutron-plugin-ml2-package'],
+  }
 }

releasenotes/notes/networking-arista-package-da048a480ba2e80d.yaml

@@ -0,0 +1,10 @@
+---
+features:
+  - |
+    The new ``neutron::plugins::m2::arista::package_ensure`` parameter has
+    been added.
+
+fixes:
+  - |
+    The ``neutron::plugins::ml2::arista`` class now installs the required
+    plugin package (``python3-networoking-arista``).

spec/classes/neutron_plugins_ml2_arista_spec.rb

@@ -45,14 +45,25 @@ describe 'neutron::plugins::ml2::arista' do
   end
 
   shared_examples 'neutron plugin ml2 arista' do
-    before do
+    let :p do
-      params.merge!(default_params)
+      default_params.merge(params)
     end
 
     it 'configures ml2 arista settings' do
-      should contain_neutron_plugin_ml2('ml2_arista/eapi_host').with_value(params[:eapi_host])
+      should contain_neutron_plugin_ml2('ml2_arista/eapi_host').with_value(p[:eapi_host])
-      should contain_neutron_plugin_ml2('ml2_arista/eapi_username').with_value(params[:eapi_username])
+      should contain_neutron_plugin_ml2('ml2_arista/eapi_username').with_value(p[:eapi_username])
-      should contain_neutron_plugin_ml2('ml2_arista/eapi_password').with_value(params[:eapi_password]).with_secret(true)
+      should contain_neutron_plugin_ml2('ml2_arista/eapi_password').with_value(p[:eapi_password]).with_secret(true)
+      should contain_neutron_plugin_ml2('ml2_arista/region_name').with_value(p[:region_name])
+      should contain_neutron_plugin_ml2('ml2_arista/sync_interval').with_value(p[:sync_interval])
+      should contain_neutron_plugin_ml2('ml2_arista/use_fqdn').with_value(p[:use_fqdn])
+    end
+
+    it 'installs the plugin package' do
+      should contain_package('python-networking-arista').with(
+        :ensure => 'present',
+        :name   => 'python3-networking-arista',
+        :tag    => ['openstack', 'neutron-plugin-ml2-package'],
+      )
     end
   end