Restore old UUID of the redfish dashboard

The redfish dashboard was updated to use a new UUID, however this caused
errors in the Grafana logs and Grafana didn't update the dashboard.
Reverting this to the old UUID fixes the issue.

Author: technowhizz

etc/kayobe/kolla/config/grafana/dashboards/openstack/redfish.json

@@ -3927,7 +3927,7 @@
   },
   "timezone": "",
   "title": "Redfish exporter",
-  "uid": "redfish",
+  "uid": "b02mElQGX",
   "version": 1,
   "weekStart": ""
 }

etc/kayobe/releasenotes/notes/redfish-uuid-grafana-2f50c76bbff6eba9.yaml

@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Fixes a bug where the Redfish Dashboard's UUID changed, causing Grafana to
+    fail to update the dashboard on deployment where the old dashboard UUID had
+    been used previously.