[stable/train-only] Detect incorrect version of nova-libvirt

Resolves: rhbz#2119113

Signed-off-by: Jiri Podivin <jpodivin@redhat.com>
Change-Id: I70483ebafd7b8deceb37c2968c98bf5655bc4095

playbooks/nova-libvirt-version.yaml

@@ -0,0 +1,13 @@
+---
+- hosts: Compute
+  gather_facts: true
+  vars:
+    metadata:
+      name: Check correctness of installed nova-libvirt version
+      description: >
+        Detect if installed nova-libvirt satisfies constraints.
+      groups:
+        - pre-upgrade
+        - pre-update
+  roles:
+    - nova_libvirt_version

roles/nova_libvirt_version/README.md

@@ -0,0 +1,41 @@
+Repos
+==============
+
+An Ansible role to check the correctness of nova-libvirt version.
+
+Requirements
+------------
+
+This role could be used before/after an Undercloud or an Overcloud has been
+deployed.
+
+Role Variables
+--------------
+
+- None
+
+Dependencies
+------------
+
+No dependencies.
+
+Example Playbook
+----------------
+
+    - hosts: undercloud
+      roles:
+         - role: nova_libvirt
+
+    - hosts: overcloud
+      roles:
+         - role: nova_libvirt
+
+License
+-------
+
+Apache
+
+Author Information
+------------------
+
+Red Hat TripleO Validations Team

roles/nova_libvirt_version/defaults/main.yml

@@ -0,0 +1,3 @@
+---
+forbidden_version: 16.2.0-55.1638436404
+nova_libvirt_container_name: nova_libvirt

roles/nova_libvirt_version/tasks/main.yml

@@ -0,0 +1,15 @@
+---
+- name: Container present
+  become: true
+  register: nova_libvirt_container_version
+  podman_container_info:
+    name: "{{ nova_libvirt_container_name }}"
+
+- name: Set fact for nova_libvirt container version
+  set_fact:
+    nova_libvirt_version: "{{ nova_libvirt_container_version['containers'][0]['Config']['Image'] | default('') }}"
+
+- name: Fail if nova-libvirt version doesn't satisfy reqs
+  fail:
+    msg: "nova-libvirt container is installed as version {{ forbidden_version }}. Which doesn't satisfy constraints"
+  when: forbidden_version in nova_libvirt_version

roles/nova_libvirt_version/vars/main.yml

@@ -0,0 +1,9 @@
+---
+metadata:
+  name: Check correctness of nova-libvirt package version
+  description: >
+    Detect whether the installed nova-libvirt version satisfies
+    constraints.
+  groups:
+    - pre-upgrade
+    - pre-update