Deprecate spice_console and rdp_console config items

spice_console and rdp_console are no longer used after
9f5adf8053196ac103302d4d7ea3b1f927caff5d, this is to deprecate
them for removal.

Change-Id: I8a882878493e3fe39bbfe0628991ee551c15d1b0
diff --git a/releasenotes/notes/deprecate-spice-rdp-console-config-f2af173552axfb72.yaml b/releasenotes/notes/deprecate-spice-rdp-console-config-f2af173552axfb72.yaml
new file mode 100644
index 0000000..58b161f
--- /dev/null
+++ b/releasenotes/notes/deprecate-spice-rdp-console-config-f2af173552axfb72.yaml
@@ -0,0 +1,6 @@
+---
+deprecations:
+  - |
+    The config options ``CONF.compute.spice_console`` and ``CONF.compute.rdp_console``
+    are deprecated because test cases using them are removed.
+    We can add them back when adding the test cases again.