Fix CI for Fedora 41 (dnf 5)

See https://pagure.io/fedora-project-config/issue/340 and
https://github.com/ansible/ansible/issues/84206 . We need to
force install python3-libdnf5 or ansible can't manage packages.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

ci/dnf-dependency.yaml

@@ -0,0 +1,16 @@
+# See https://github.com/ansible/ansible/issues/84206 for the background on this
+# When the server is on ansible >= 2.19 things should just work, but ours are
+# not (RHEL 9 has 2.14, RHEL 8 has 2.15, as I write this)
+
+- name: Ensure that python3-libdnf5 is installed
+  block:
+    - name: Check whether python3-libdnf5 is installed
+      ansible.builtin.command: "rpm -q python3-libdnf5"
+      register: p3dnf5
+      failed_when: "1 != 1"
+      changed_when: "1 != 1"
+      check_mode: no
+
+    - name: Install python3-libdnf5 with direct dnf command
+      ansible.builtin.command: "dnf -y install python3-libdnf5"
+      when: "p3dnf5.rc != 0"

ci/perl.yaml

@@ -1,5 +1,8 @@
 - hosts: all
   tasks:
+    - name: Include dnf dependency workaround task
+      ansible.builtin.include_tasks:
+        file: dnf-dependency.yaml
     - name: Install required packages
       package:
         name: ['os-autoinst', 'perl-Test-Strict', 'perl-Test-Harness', 'perl-JSON', 'perl-REST-Client', 'perl-Code-TidyAll']

ci/tox.yaml

@@ -1,5 +1,8 @@
 - hosts: all
   tasks:
+    - name: Include dnf dependency workaround task
+      ansible.builtin.include_tasks:
+        file: dnf-dependency.yaml
     - name: Ensure tox is installed
       include_role:
         name: ensure-tox