fix: limit migrate-valkey playbook

The playbook for migrating from `Redis` to `Valkey` fails as it targets
`all` hosts within the inventory. This means that during reconfiguration
of `Valkey` checks will fail as it attempts to perform `ping pong`
against hosts outside of the `valkey` group. This has been fixed by
limiting the playbook only to `valkey,redis` groups.

Closes-Bug: 2158356

Change-Id: I7baeab33ca8ba4372971d51500042628e3e14efa
Signed-off-by: Jack Hodgkiss <jack@stackhpc.com>

Author: jackhodgkiss

ansible/migrate-valkey.yml

@@ -2,7 +2,7 @@
 - import_playbook: gather-facts.yml
 
 - name: Perform Valkey migration
-  hosts: all
+  hosts: valkey,redis
   gather_facts: false
   max_fail_percentage: >-
     {{ group_hosts_max_fail_percentage |

releasenotes/notes/fix-valkey-migration-hosts-0e0dc8da0ed55bdc.yaml

@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Fixes a bug where valkey migration playbook will fail as it targets hosts
+    that are not running valkey.
+    `LP#2158356 <https://bugs.launchpad.net/kolla-ansible/+bug/2158356>`__