Customize downloaded Ubuntu images

Instead of making tobiko customize Ubuntu images during test execution,
the Tobiko ansible roles run before that will do it.

Related: #TOBIKO-126

Change-Id: I5c6746c6ad488eb4b27164faea67a5c0253f15f3

roles/tobiko-common/defaults/main.yaml

@@ -59,6 +59,18 @@ test_collect_dir: '{{ test_src_dir | realpath }}/{{ test_report_name }}'
 # --- download-images options -------------------------------------------------
 download_images_dir: "{{ ansible_user_dir }}/.downloaded-images"
 download_images:
-  ubuntu-minimal:
+  ubuntu-customized:
     type: ubuntu
     url: "https://cloud-images.ubuntu.com/minimal/releases/jammy/release/ubuntu-22.04-minimal-cloudimg-amd64.img"
+    customized: false
+    customize_command_pattern: >
+      LIBGUESTFS_BACKEND=direct virt-customize -a $TMPPATH
+      --firstboot-command 'sh -c "hostname > /var/www/html/id"'
+      --install iperf3,iputils-ping,ncat,nginx,vlan
+      --run-command 'echo "[Unit]\nDescription=iperf3 server on port %i\nAfter=syslog.target network.target\n\n[Service]\nExecStart=/usr/bin/iperf3 -s -p %i\nRestart=always\nUser=root\n\n[Install]\nWantedBy=multi-user.target\nDefaultInstance=5201\n"
+      > /etc/systemd/system/iperf3-server@.service'
+      --run-command 'systemctl enable iperf3-server@5201'
+      --run-command 'echo "8021q" >> /etc/modules'
+      --run-command
+      'echo "network:\n  version: 2\n  vlans:\n    vlan101:\n      dhcp4: true\n      dhcp4-overrides:\n        use-routes: false\n      dhcp6: true\n      dhcp6-overrides:\n        use-routes: false\n      id: 101\n      link: ens3\n"
+      > /etc/netplan/75-tobiko-vlan.yaml'

roles/tobiko-configure/tasks/main.yaml

@@ -25,6 +25,11 @@
         - section: "{{ dict_value.type }}"
           option: image_url
           value: "file://{{ download_images_dir }}/{{ file_name }}"
+        {%   if dict_value.customized | default(False) | bool or dict_value.customize_command_pattern is defined %}
+        - section: "{{ dict_value.type }}"
+          option: customized_image_provided
+          value: True
+        {%   endif %}
         {% endfor %}
   vars:
     sections: "{{ test_default_conf | combine(test_conf, recursive=True) }}"

roles/tobiko-download-images/tasks/main.yaml

@@ -13,3 +13,26 @@
   retries: 5
   until: download is success
   with_dict: "{{ download_images }}"
+
+- name: install libguestfs-tools
+  become: true
+  package:
+    name: libguestfs-tools
+
+- name: customize images
+# root needed to avoid the supermin issue:
+# https://github.com/virt-manager/virt-bootstrap/issues/9
+  become: yes
+  vars:
+    image_file_path: "{{ download_images_dir }}/{{ item.key }}"
+  shell: |
+    set -xe
+    TMPPATH=$(mktemp)
+    cp {{ image_file_path }} $TMPPATH
+    {{ item.value.customize_command_pattern }}
+    mv $TMPPATH {{ image_file_path }}
+    chmod a+r {{ image_file_path }}
+  when:
+    - not (item.value.customized | default(False) | bool)
+    - item.value.customize_command_pattern is defined
+  with_dict: "{{ download_images }}"