CentOS 8 support

* Support Python 3
* Use Open vSwitch from Delorean master in CI
* Add a tenks-deploy-teardown-centos8 CI job

Depends-On: https://github.com/stackhpc/ansible-role-libvirt-host/pull/26
Depends-On: https://github.com/stackhpc/ansible-role-libvirt-vm/pull/53

Change-Id: Ibd504389523bf1197aa5f7c3e9ef6cad8966ddc2

ansible/group_vars/hypervisors

@@ -4,7 +4,7 @@
 physnet_mappings: {}
 
 system_requirements:
-  - python-virtualenv
+  - "python{% if ansible_python.version.major == 3 %}3{% endif %}-virtualenv"
 
 # Naming scheme for bridges created by tenks for physical networks is
 # {{ bridge_prefix + i }}, where `i` is the index of the physical network in

ansible/roles/ironic-enrolment/tasks/node.yml

@@ -87,7 +87,7 @@
               --{{ iface }}-interface {{ node.ironic_config[iface + '_interface'] }}
             {% endif %}
           {% endfor %}
-          {% for key, val in properties.iteritems() %}
+          {% for key, val in properties.items() %}
             --property '{{ key }}={{ val }}'
           {% endfor %}
       vars:

playbooks/openvswitch.yml

@@ -28,7 +28,30 @@
         - name: Install Open vSwitch
           include_role:
             name: fkautz.openvswitch-install
-      when: ansible_os_family == "RedHat"
+      when:
+        - ansible_os_family == "RedHat"
+        - ansible_distribution_major_version is version(8, '<')
+
+    - block:
+        - name: Install the Delorean repositories
+          get_url:
+            url: "{{ item }}"
+            dest: /etc/yum.repos.d/
+          with_items:
+            - https://trunk.rdoproject.org/centos8-master/consistent/delorean.repo
+            - https://trunk.rdoproject.org/centos8-master/delorean-deps.repo
+
+        - name: Install Open vSwitch
+          package:
+            name: openvswitch
+
+        - name: Start openvswitch service
+          service:
+            name: openvswitch
+            state: started
+      when:
+        - ansible_os_family == "RedHat"
+        - ansible_distribution_major_version is version(8, '>=')
 
     - block:
         - name: Install packages

zuul.d/jobs.yaml

@@ -8,13 +8,18 @@
       tox_envlist: alint
 
 - job:
-    name: tenks-deploy-teardown-centos
+    name: tenks-deploy-teardown-centos7
     parent: tenks-deploy-teardown-base
     nodeset: centos-7
     required-projects:
       - name: openstack/requirements
         override-checkout: stable/train
 
+- job:
+    name: tenks-deploy-teardown-centos8
+    parent: tenks-deploy-teardown-base
+    nodeset: centos-8
+
 - job:
     name: tenks-deploy-teardown-ubuntu
     parent: tenks-deploy-teardown-base

zuul.d/project.yaml

@@ -9,7 +9,8 @@
     check:
       jobs:
         - tenks-tox-ansible-lint
-        - tenks-deploy-teardown-centos
+        - tenks-deploy-teardown-centos7
+        - tenks-deploy-teardown-centos8
         - tenks-deploy-teardown-ubuntu
         # Until we have ironic jobs using tenks, gate on the kayobe overcloud
         # deploy job, which uses tenks to test bare metal compute provisioning.
@@ -19,7 +20,8 @@
       queue: tenks
       jobs:
         - tenks-tox-ansible-lint
-        - tenks-deploy-teardown-centos
+        - tenks-deploy-teardown-centos7
+        - tenks-deploy-teardown-centos8
         - tenks-deploy-teardown-ubuntu
         # Until we have ironic jobs using tenks, gate on the kayobe overcloud
         # deploy job, which uses tenks to test bare metal compute provisioning.