Add Ubuntu focal and CentOS 8 support

Depends-On: https://review.opendev.org/736507
Depends-On: https://review.opendev.org/745676
Change-Id: I8333d707026056903b973f38908eea6b419e7b44

vars/debian.yml

@@ -22,7 +22,7 @@ ironic_devel_distro_packages:
 
 ironic_api_distro_packages:
   - libxml2-dev
-  - python-systemd
+  - python3-systemd
 
 ironic_conductor_distro_packages:
   - libxml2-dev
@@ -32,7 +32,7 @@ ironic_conductor_distro_packages:
   - libxslt1-dev
   - qemu-utils
   - libpq-dev
-  - python-yaml
+  - python3-yaml
   - open-iscsi
   - ipmitool
   - tftpd-hpa
@@ -57,7 +57,7 @@ ironic_inspector_distro_packages:
    - syslinux-efi
    - libxslt1-dev
    - libpq-dev
-   - python-yaml
+   - python3-yaml
    - ipmitool
 
 ironic_inspector_http_distro_packages:

vars/redhat.yml

@@ -22,16 +22,14 @@ ironic_devel_distro_packages:
 
 ironic_api_distro_packages:
   - libxml2-devel
-  - systemd-python
+  - "{{ ansible_distribution_major_version is version('8', '<') | ternary('systemd-python', 'python3-systemd') }}"
 
 ironic_conductor_distro_packages:
   - libxml2-devel
-  - syslinux
-  - syslinux-devel
+  - "{{ ansible_distribution_major_version is version('8', '<') | ternary('syslinux-devel', 'syslinux') }}"
   - syslinux-tftpboot
   - libxslt-devel
-  - qemu-kvm-tools
-  - qemu-img-ev
+  - "qemu-kvm{% if ansible_distribution_major_version is version('8', '<') %}-ev{% endif %}"
   - libiscsi-utils
   - iscsi-initiator-utils
   - ipmitool