CI: use kubevirt.core dynamic inventory

This allows a single source of truth for the virtual machines in a
kubevirt ci-run.

`etcd_member_name` should be correctly handled in kubespray-defaults for
testing the recover cases.

tests/cloud_playbooks/roles/packet-ci/vars/main.yml

@@ -1,14 +1,32 @@
 ---
-_vm_count_dict:
-  separate: 3
-  ha: 3
-  ha-recover: 3
-  ha-recover-noquorum: 3
-  all-in-one: 1
-  node-etcd-client: 4
-  default: 2
-
-vm_count: "{{ _vm_count_dict[mode | d('default')] }}"
+# This is a list of nodes with groups for each scenario/cluster layouts
+scenarios:
+  separate:
+    - ['kube_control_plane']
+    - ['kube_node']
+    - ['etcd']
+  ha:
+    - ['kube_control_plane', 'etcd']
+    - ['kube_control_plane', 'etcd']
+    - ['kube_node', 'etcd']
+  default:
+    - ['kube_control_plane', 'etcd']
+    - ['kube_node']
+  all-in-one:
+    - ['kube_control_plane', 'etcd', 'kube_node']
+  ha-recover:
+    - ['kube_control_plane', 'etcd']
+    - ['kube_control_plane', 'etcd', 'broken_kube_control_plane', 'broken_etcd']
+    - ['kube_node', 'etcd']
+  ha-recover-noquorum:
+    - ['kube_control_plane', 'etcd', 'broken_kube_control_plane', 'broken_etcd']
+    - ['kube_control_plane', 'etcd', 'broken_kube_control_plane', 'broken_etcd']
+    - ['kube_node', 'etcd']
+  node-etcd-client:
+    - ['kube_node', 'kube_control_plane', 'etcd']
+    - ['kube_node', 'etcd']
+    - ['kube_node', 'etcd']
+    - ['kube_node']
 
 # Get pod metadata / CI vars from environment