Add hw_firmware_stateless image property

Add the new image property to request stateless firmware. The property
will be used by the libvirt driver once the actual logic to enable
the feature is implemented.

Partially-Implements: blueprint libvirt-stateless-firmware
Change-Id: I05d4ff89d2b713b217b6c690e40fd4a16a397b63

nova/tests/unit/notifications/objects/test_notification.py

@@ -385,7 +385,7 @@ notification_object_data = {
     # ImageMetaProps, so when you see a fail here for that reason, you must
     # *also* bump the version of ImageMetaPropsPayload. See its docstring for
     # more information.
-    'ImageMetaPropsPayload': '1.13-682cfe847d16301734e1fba924063e6d',
+    'ImageMetaPropsPayload': '1.14-af9efd17cd034596be792fa25f24e83d',
     'InstanceActionNotification': '1.0-a73147b93b520ff0061865849d3dfa56',
     'InstanceActionPayload': '1.8-b948818df6ec562e4eb4b23e515e451b',
     'InstanceActionRebuildNotification':

nova/tests/unit/objects/test_image_meta.py

@@ -591,3 +591,20 @@ class TestImageMetaProps(test.NoDBTestCase):
         self.assertNotIn(
             'hw_ephemeral_encryption_secret_uuid',
             primitive['nova_object.data'])
+
+    def test_obj_make_compatible_stateless_firmware(self):
+        """Check 'hw_firmware_stateless' compatibility."""
+        obj = objects.ImageMetaProps(
+            hw_firmware_stateless=True)
+
+        primitive = obj.obj_to_primitive('1.38')
+        self.assertIn(
+            'hw_firmware_stateless',
+            primitive['nova_object.data'])
+        self.assertTrue(
+            primitive['nova_object.data']['hw_firmware_stateless'])
+
+        primitive = obj.obj_to_primitive('1.37')
+        self.assertNotIn(
+            'hw_firmware_stateless',
+            primitive['nova_object.data'])

nova/tests/unit/objects/test_objects.py

@@ -1105,7 +1105,7 @@ object_data = {
     'HyperVLiveMigrateData': '1.4-e265780e6acfa631476c8170e8d6fce0',
     'IDEDeviceBus': '1.0-29d4c9f27ac44197f01b6ac1b7e16502',
     'ImageMeta': '1.8-642d1b2eb3e880a367f37d72dd76162d',
-    'ImageMetaProps': '1.37-1e0d70fb51041c0446b00695c5ef0e21',
+    'ImageMetaProps': '1.38-1f4f4f1b60413aa543e446d716cfbc20',
     'Instance': '2.8-2727dba5e4a078e6cc848c1f94f7eb24',
     'InstanceAction': '1.2-9a5abc87fdd3af46f45731960651efb5',
     'InstanceActionEvent': '1.4-5b1f361bd81989f8bb2c20bb7e8a4cb4',