Deduplicate notification samples Rocky - 4

This patch refactors the sample files of:

* instance-volume_attach-start
* instance-volume_attach-end
* instance-volume_attach-error
* instance-volume_detach-start
* instance-volume_detach-end

notifications to use a common InstanceActionVolumePayload sample data.

and refactor:

* instance-volume_swap-start
* instance-volume_swap-end
* instance-volume_swap-error

notifications to use a common InstanceActionVolumeSwapPayload sample data

Change-Id: I51fd194ac3b95be96db2676b4abf3df5a14d0faa

doc/notification_samples/common_payloads/InstanceActionVolumePayload.json

@@ -0,0 +1,9 @@
+{
+    "$ref": "InstanceActionPayload.json",
+    "nova_object.data":{
+        "volume_id": "a07f71dc-8151-4e7d-a0cc-cd24a3f11113"
+    },
+    "nova_object.name": "InstanceActionVolumePayload",
+    "nova_object.namespace": "nova",
+    "nova_object.version": "1.3"
+}

doc/notification_samples/common_payloads/InstanceActionVolumeSwapPayload.json

@@ -0,0 +1,10 @@
+{
+    "$ref": "InstanceActionPayload.json",
+    "nova_object.data": {
+        "new_volume_id": "227cc671-f30b-4488-96fd-7d0bf13648d8",
+        "old_volume_id": "a07f71dc-8151-4e7d-a0cc-cd24a3f11113"
+    },
+    "nova_object.name": "InstanceActionVolumeSwapPayload",
+    "nova_object.namespace": "nova",
+    "nova_object.version": "1.5"
+}