Move capi_cluster_kubernetes_version to config (#995)

* move capi_cluster kubernetes version to config

* update comment and make consistent with community_images templating

* fixed templating

Author: wtripp180901

roles/capi_cluster/defaults/main.yml

@@ -35,18 +35,19 @@ capi_cluster_openstack_ca_cert: >-
 
 # The Kubernetes version of the cluster and the id of the matching image
 # Default, wire these up with an image from community images when available
-capi_cluster_kubernetes_version: >-
-  {{-
-    community_images.kube_1_32.kubernetes_version
-    if community_images is defined and 'kube_1_32' in community_images
-    else undef(hint = 'capi_cluster_kubernetes_version is required')
-  }}
+# capi_cluster_kubernetes_version must have a matching key in community_images
+# e.g `community_images.kube_1_32` is required for `capi_cluster_kubernetes_version: v1.32`
+capi_cluster_kubernetes_version: "{{ undef(hint='capi_cluster_kubernetes_version is required') }}"
+# Extract minor and major version and filter into format of community images key
+_capi_cluster_community_images_key: "kube_{{ (capi_cluster_kubernetes_version
+  | regex_replace('^v', '') | split('.'))[:-1] | join('_')
+  }}"
 capi_cluster_machine_image_id: >-
   {{-
-    community_images_image_ids.kube_1_32
+    community_images_image_ids[_capi_cluster_community_images_key]
     if (
       community_images_image_ids is defined and
-      'kube_1_32' in community_images_image_ids
+      _capi_cluster_community_images_key in community_images_image_ids
     )
     else undef(hint = 'capi_cluster_machine_image_id is required')
   }}