Fix install podman error on Ubuntu aarch64 Bionic

The official podman ubuntu install guide[1] tells to install podman from
Kubic project repo for ubuntu Bionic and Focal. And project atomic PPA
repo[2] is deprecated.

But Kubic repo only provides x86_64 deb packages for Bionic. For non x86_64
platforms use project atomic PPA repo on Bionic.

Also add a job zuul-jobs-test-ensure-podman-ubuntu-focal.

[1] https://podman.io/getting-started/installation
[2] https://launchpad.net/~projectatomic/+archive/ubuntu/ppa

Change-Id: I402adf1866e4bb8f3b388216bc48b9927e1388b1

roles/ensure-podman/tasks/Ubuntu-18.04.yaml

@@ -0,0 +1,34 @@
+- name: Add kubic project repository
+  when: ansible_architecture == "x86_64"
+  include_role:
+    name: ensure-package-repositories
+  vars:
+    repositories_keys:
+      - url: "https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_{{ ansible_distribution_version }}/Release.key"
+    repositories_list:
+      - repo: "deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_{{ ansible_distribution_version }}/ /"
+
+- name: Add project atomic PPA repository
+  when: ansible_architecture != "x86_64"
+  include_role:
+    name: ensure-package-repositories
+  vars:
+    repositories_list:
+      - repo: ppa:projectatomic/ppa
+
+- name: Install podman
+  package:
+    name:
+      - podman
+      - uidmap
+      - slirp4netns
+    state: present
+  become: yes
+
+# NOTE(pabelanger): Remove default registries.conf file, so we can manage it
+# ourself. It could have v1 syntax, which doesn't work with v2.
+- name: Remove /etc/containers/registries.conf
+  become: true
+  file:
+    state: absent
+    path: /etc/containers/registries.conf

roles/ensure-podman/tasks/Ubuntu.yaml

@@ -1,11 +1,10 @@
-- name: Add all repositories
+- name: Add kubic project repository
   include_role:
     name: ensure-package-repositories
   vars:
     repositories_keys:
       - url: "https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_{{ ansible_distribution_version }}/Release.key"
     repositories_list:
-      - repo: ppa:projectatomic/ppa
       - repo: "deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_{{ ansible_distribution_version }}/ /"
 
 - name: Install podman
@@ -14,6 +13,7 @@
       - podman
       - uidmap
       - slirp4netns
+      - fuse-overlayfs
     state: present
   become: yes
 

roles/ensure-podman/tasks/main.yaml

@@ -1,6 +1,7 @@
 - name: Find distribution installation
   include_tasks: "{{ zj_distro_os }}"
   with_first_found:
+    - "{{ ansible_distribution }}-{{ ansible_distribution_version }}.yaml"
     - "{{ ansible_distribution }}-{{ ansible_distribution_major_version }}.yaml"
     - "{{ ansible_distribution }}.yaml"
     - "{{ ansible_os_family }}.yaml"

zuul-tests.d/container-roles-jobs.yaml

@@ -412,6 +412,15 @@
         - name: ubuntu-bionic
           label: ubuntu-bionic
 
+- job:
+    name: zuul-jobs-test-ensure-podman-ubuntu-focal
+    description: Tests ensure-podman role on ubuntu-focal
+    parent: zuul-jobs-test-ensure-podman
+    nodeset:
+      nodes:
+        - name: ubuntu-focal
+          label: ubuntu-focal
+
 - job:
     name: zuul-jobs-test-ensure-skopeo-centos-8
     description: Tests ensure-skopeo role on centos-8
@@ -476,6 +485,7 @@
         - zuul-jobs-test-ensure-podman-centos-8
         - zuul-jobs-test-ensure-podman-fedora-34
         - zuul-jobs-test-ensure-podman-ubuntu-bionic
+        - zuul-jobs-test-ensure-podman-ubuntu-focal
         - zuul-jobs-test-ensure-skopeo-centos-8
         - zuul-jobs-test-ensure-skopeo-fedora-34
         - zuul-jobs-test-ensure-skopeo-ubuntu-bionic
@@ -501,6 +511,7 @@
         - zuul-jobs-test-ensure-kubernetes-crio
         - zuul-jobs-test-ensure-podman-centos-8
         - zuul-jobs-test-ensure-podman-ubuntu-bionic
+        - zuul-jobs-test-ensure-podman-ubuntu-focal
         - zuul-jobs-test-ensure-skopeo-centos-8
         - zuul-jobs-test-ensure-skopeo-fedora-34
         - zuul-jobs-test-ensure-skopeo-ubuntu-bionic