Add support for showing image properties in server show response

This change adds a new api microversion to add support for
including image properties in ``server show`` and ``server list
--long`` responses as well as in response for ``server rebuild``
instance action.

Implements: blueprint image-properties-in-server-show
Change-Id: Ic135389954e43e6478288c0cdcffd780915cdb40

api-ref/source/parameters.yaml

@@ -3994,6 +3994,13 @@ image_progress:
   in: body
   required: true
   type: integer
+image_properties:
+  description: |
+    The image properties key/value pairs.
+  in: body
+  required: true
+  type: object
+  min_version: 2.98
 image_server:
   description: |
     The server booted from image.