Fix playbooks for cross-platform compatibility and graceful error handling

- Fix ansible_default_ipv4 undefined issue with fallback to ansible_ssh_host
- Simplify disk space analyzer to avoid complex JSON parsing
- Update Docker cleanup to handle missing Docker gracefully
- Update log archiver to handle missing rotated logs gracefully
- All playbooks now provide comprehensive JSON reports
- Tested successfully on Ubuntu 20.04/22.04/24.04, Debian 11/12/13, and Alpine

tests/roles/test_playbook_runner/tasks/main.yml

@@ -0,0 +1,21 @@
+---
+- name: Run {{ playbook_name }}
+  shell: |
+    cd "{{ playbook_dir }}"
+    ansible-playbook "{{ playbook_file }}" -i "{{ inventory_file }}" -l "{{ inventory_hostname }}" 2>&1 | tee "/tmp/{{ playbook_name }}_output.log"
+  delegate_to: localhost
+  register: playbook_result
+  ignore_errors: yes
+
+- name: Mark test result
+  set_fact:
+    test_results: "{{ test_results | default({}) | combine({playbook_name: {'success': playbook_result.rc == 0, 'output': playbook_result.stdout | default('')}}) }}"
+  delegate_to: localhost
+
+- name: Fetch JSON reports from container
+  fetch:
+    src: "/tmp/{{ output_pattern }}"
+    dest: "{{ results_dir }}/{{ inventory_hostname }}_"
+    flat: yes
+  delegate_to: localhost
+  failed_when: no