[2.9] [cloud_init_data_facts tests] fix for centos8 (#72886)

Change:
- `udev` is provided by `systemd-udev`, which our `state=present` check
  doesn't match. For now, work around this so we don't end up trying to
  upgrade all of systemd.
- In the future, we should discuss if the `yum` module does the right
  thing here.

Test Plan:
- Locally in docker
- CI

Signed-off-by: Rick Elrod <rick@elrod.me>

test/integration/targets/cloud_init_data_facts/tasks/main.yml

@@ -11,11 +11,23 @@
   - not (ansible_distribution == "Ubuntu" and ansible_distribution_major_version|int == 14)
   - not (ansible_os_family == "Suse" and ansible_distribution_major_version|int != 42 and ansible_python.version.major != 3)
   block:
+  - name: Include distribution specific variables
+    include_vars: "{{ lookup('first_found', params) }}"
+    vars:
+      params:
+        files:
+        - "{{ ansible_facts.distribution }}-{{ ansible_facts.distribution_major_version }}.yml"
+        - "{{ ansible_facts.os_family }}.yml"
+        - default.yml
+        paths:
+        - "{{ role_path }}/vars"
+
+  - debug:
+      var: pkgs_required
+
   - name: setup install cloud-init
     package:
-      name:
-      - cloud-init
-      - udev
+      name: "{{ pkgs_required }}"
 
   - name: setup run cloud-init
     service:

test/integration/targets/cloud_init_data_facts/vars/CentOS-7.yml

@@ -0,0 +1,3 @@
+pkgs_required:
+  - cloud-init
+  - systemd # This provides 'udev' as a virtual pkg

test/integration/targets/cloud_init_data_facts/vars/CentOS-8.yml

@@ -0,0 +1,3 @@
+pkgs_required:
+  - cloud-init
+  - systemd-udev

test/integration/targets/cloud_init_data_facts/vars/default.yml

@@ -0,0 +1,3 @@
+pkgs_required:
+  - cloud-init
+  - udev