Expose devices/enabled_vgpu_types config option

This exposes the devices/enabled_vgpu_types config option which is required for
 vgpu support.

bp tripleo-vgpu

Change-Id: I418b5ed3ee43f8621c2997980d17fa20861d009d

manifests/compute.pp

@@ -208,6 +208,7 @@ class nova::compute (
   $vcpu_pin_set_real = pick(join(any2array($vcpu_pin_set), ','), $::os_service_default)
 
   include ::nova::pci
+  include ::nova::compute::vgpu
 
   if $keymgr_api_class {
     warning('The keymgr_api_class parameter is deprecated, use keymgr_backend')

manifests/compute/vgpu.pp

@@ -0,0 +1,20 @@
+# Class nova::compute::vgpu
+#
+# Configures nova compute vgpu options
+#
+# === Parameters:
+#
+#  [*enabled_vgpu_types*]
+#   (optional) Specify which specific GPU type(s) the instances can get
+#   Defaults to $::os_service_default
+#   Example: 'nvidia-35' or ['nvidia-35', 'nvidia-36']
+
+class nova::compute::vgpu(
+  $enabled_vgpu_types = $::os_service_default
+) {
+  include ::nova::deps
+
+  nova_config {
+    'devices/enabled_vgpu_types': value => join(any2array($enabled_vgpu_types), ',');
+  }
+}

releasenotes/notes/vgpu_devices-4441729018e59ee1.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Exposes the devices/enabled_vgpu_types config option for vgpu support.
+    More information in the `nova vgpu documentation <https://docs.openstack.org/nova/latest/admin/virtual-gpu.html>`_.

spec/classes/nova_compute_vgpu_spec.rb

@@ -0,0 +1,51 @@
+require 'spec_helper'
+
+describe 'nova::compute::vgpu' do
+
+  shared_examples_for 'nova-compute-vgpu' do
+    context 'with default parameters' do
+      it 'clears vgpu devices' do
+        is_expected.to contain_nova_config('devices/enabled_vgpu_types').with(:value => '<SERVICE DEFAULT>')
+      end
+    end
+
+    context 'with vgpu device' do
+      let :params do
+        {
+            :enabled_vgpu_types => "nvidia-35",
+        }
+      end
+      it 'configures nova vgpu device entries' do
+        is_expected.to contain_nova_config('devices/enabled_vgpu_types').with(
+          'value' => 'nvidia-35'
+        )
+      end
+    end
+
+    context 'with multiple vgpu devices' do
+      let :params do
+        {
+          :enabled_vgpu_types => ["nvidia-35","nvidia-36"]
+        }
+      end
+
+      it 'configures nova vgpu device entries' do
+        is_expected.to contain_nova_config('devices/enabled_vgpu_types').with(
+          'value' => "nvidia-35,nvidia-36"
+        )
+      end
+    end
+  end
+
+  on_supported_os({
+    :supported_os => OSDefaults.get_supported_os
+  }).each do |os,facts|
+    context "on #{os}" do
+      let (:facts) do
+        facts.merge!(OSDefaults.get_facts())
+      end
+
+      it_configures 'nova-compute-vgpu'
+    end
+  end
+end