CI: adapt packet-ci role to act as a molecule provisioner

To work with molecule, we need to use the name provided by molecule_yml
in inventory.

Inject the name in the VirtualMachineInstance (with a default to handle
non-molecule scenario) and get it back as part of inventory).

Account for no ansible groups

tests/cloud_playbooks/create-packet.yml

@@ -1,8 +1,11 @@
 ---
-
 - name: Provision Packet VMs
   hosts: localhost
   gather_facts: false
   become: true
-  roles:
-    - { role: packet-ci, vm_cleanup: false }
+  tasks:
+  - name: Create Kubevirt VMs
+    import_role:
+      name: packet-ci
+  - name: Update inventory for Molecule
+    meta: refresh_inventory

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

@@ -13,7 +13,9 @@ memory_allocation_ratio: 1
 # Deployment mode
 mode: all-in-one
 
-cluster_layout: "{{ scenarios[mode] }}"
+node_groups:
+- 'all'
+cluster_layout: "{{ molecule_yml.platforms | d(scenarios[mode]) }}"
 
 # Cloud init config for each os type
 # distro: fedora -> 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

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

@@ -1,11 +1,14 @@
 ---
 - name: Include custom vars for ci job
   include_vars: "../files/{{ ci_job_name }}.yml"
+  when: molecule_yml is not defined
 
 - name: Start vms for CI job
   kubernetes.core.k8s:
     definition: "{{ lookup('template', 'vm.yml.j2', template_vars=item) }}"
   loop: "{{ cluster_layout }}"
+  loop_control:
+    index_var: index
 
 - name: Wait for vms to have IP addresses
   kubernetes.core.k8s_info:
@@ -24,17 +27,17 @@
 - name: Massage VirtualMachineInstance data into an Ansible inventory structure
   vars:
     ips: "{{ vmis.resources | map(attribute='status.interfaces.0.ipAddress') }}"
-    names: "{{ vmis.resources | map(attribute='metadata.name') }}"
-    _groups: "{{ vmis.resources | map(attribute='metadata.annotations.ansible_groups') | map('split', ',') }}"
+    names: "{{ vmis.resources | map(attribute='metadata.annotations.inventory_name') }}"
+    _groups: "{{ (vmis.resources | map(attribute='metadata.annotations.ansible_groups') | map('split', ','))}}"
     hosts: "{{ ips | zip(_groups, names)
-                | map('zip', ['ansible_host', 'ansible_groups', 'k8s_vmi_name'])
+                | map('zip', ['ansible_host', 'ansible_groups', 'inventory_name'])
                 | map('map', 'reverse') | map('community.general.dict') }}"
   loop: "{{ hosts | map(attribute='ansible_groups') | flatten | unique }}"
   set_fact:
     ci_inventory: "{{ ci_inventory|d({}) | combine({
                     item: {
                       'hosts': hosts | selectattr('ansible_groups', 'contains', item)
-                                     | rekey_on_member('k8s_vmi_name')
+                                     | rekey_on_member('inventory_name')
                       }
                     })
                   }}"

tests/cloud_playbooks/roles/packet-ci/templates/vm.yml.j2

@@ -7,11 +7,11 @@ metadata:
   annotations:
     kubespray.com/ci.template-path: "tests/cloud_playbooks/roles/packet-ci/templates/vm.yml.j2"
     ansible_groups: "{{ node_groups | join(',') }}"
+    inventory_name: "{{ name | d(cloud_image ~ '-' ~ index) }}"
     # This does not use a dns prefix because dots are hard to escape with map(attribute=) in Jinja
   labels:
     kubevirt.io/os: {{ cloud_image }}
     kubevirt.io/size: small
-    kubevirt.io/domain: "{{ test_name }}"
     ci_job_id: "{{ ci_job_id }}"
     ci_job_name: "{{ ci_job_name }}"
   # leverage the Kubernetes GC for resources cleanup