Another fixup

```
TASK [Query images and tags] ***************************************************
Friday 02 February 2024  20:39:16 +0000 (0:00:01.453)       0:00:01.529 *******
fatal: [localhost]: FAILED! => changed=false
  cmd:
  - /stack/kayobe-automation-env/src/kayobe-config/etc/kayobe/../../tools/kolla-images.py
  - list-tags
  delta: '0:00:00.324461'
  end: '2024-02-02 20:39:17.748038'
  msg: non-zero return code
  rc: 1
  start: '2024-02-02 20:39:17.423577'
  stderr: |-
    Traceback (most recent call last):
      File "/stack/kayobe-automation-env/src/kayobe-config/etc/kayobe/../../tools/kolla-images.py", line 372, in <module>
        main()
      File "/stack/kayobe-automation-env/src/kayobe-config/etc/kayobe/../../tools/kolla-images.py", line 364, in main
        list_tags(base_distros, kolla_image_tags)
      File "/stack/kayobe-automation-env/src/kayobe-config/etc/kayobe/../../tools/kolla-images.py", line 328, in list_tags
        image_tags = get_tags(base_distros, kolla_image_tags)
      File "/stack/kayobe-automation-env/src/kayobe-config/etc/kayobe/../../tools/kolla-images.py", line 199, in get_tags
        tag = get_tag(kolla_image_tags, base_distro, container)
      File "/stack/kayobe-automation-env/src/kayobe-config/etc/kayobe/../../tools/kolla-images.py", line 187, in get_tag
        return get_parent_tag(kolla_image_tags, base_distro, container)
      File "/stack/kayobe-automation-env/src/kayobe-config/etc/kayobe/../../tools/kolla-images.py", line 178, in get_parent_tag
        return kolla_image_tags[parent_tag_name][base_distro]
    KeyError: 'rocky-9'
  stderr_lines: <omitted>
  stdout: ''
  stdout_lines: <omitted>
```

Author: jovial

.automation

@@ -152,7 +152,7 @@ def get_parent_tag_name(kolla_image_tags: KollaImageTags, base_distro: Optional[
 
     if container in CONTAINER_TO_PREFIX_VAR_EXCEPTIONS:
         prefix_var = CONTAINER_TO_PREFIX_VAR_EXCEPTIONS[container]
-        if prefix_var in kolla_image_tags:
+        if prefix_var in kolla_image_tags and (base_distro is None or base_distro in kolla_image_tags[prefix_var]):
             return prefix_var
     else:
         prefix_var = container